2. Heavy metals that pose health hazards to people and ecosystems occur __________. a. as a by-product of agriculture b. over extended periods of time c. very quickly with tragic results d. all of the above

Answers

Answer 1
The appropriate answer is doing. All of the above. Heavy metals are sometimes used in agricultural chemicals and can contaminate both terrestrial and aquatic ecosystems. Heavy metal concentrations can build up overtime as industrialization progressed. Chemical spills can introduce heavy metals to ecosystems quickly with devastating effects.
Answer 2

Answer:

Many of these substances, when eaten, cause serious health problems over time.

Explanation:

yep


Related Questions

Biologists use the fluid mosaic model to describe membrane structure. Which statements about the fluid mosaic structure of a membrane are correct? Select the three correct statements.
The diverse proteins found in and attached to membranes perform many important functions.
Because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane.
The kinky tails of some proteins help keep the membrane fluid by preventing the component molecules from packing solidly together.
The framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.
Membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer.

Answers

This is the best 3 answer about the fluid mosaic structure of a membraneFirst, The diverse proteins found in and attached to membranes perform many important functions.  Second, The framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.  Third, Because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane.

Explanation:

The fluid mosaic model illustrates the structure of the plasma membrane as a mosaic of elements including phospholipids, cholesterol, proteins, and carbohydrates that provides the membrane a fluid character. Plasma membranes range from 5 to 10 nm in thickness.

The fluid mosaic model is applied to represent the synergies of lipids and proteins in biological membranes. This model essentially proclaims the theory of lateral diffusion, stating that proteins can freely move about within a membrane and that such layers are assumed to effectively be two-dimensional.


With respect to the fluid mosaic structure of the membrane, the following three statements are true:

Many important processes are carried out by various proteins that are present in and bound to membranes.Membrane proteins and phospholipids can move across the membrane because the membrane is fluid.The bilayer of phospholipids that form a membrane consists of hydrophilic heads facing the aqueous environment inside and outside the cell, and hydrophobic tails clustered in the middle.

Therefore, the correct options are A, B and D.

These descriptions of the essential features of the fluid mosaic model are accurate. This highlights how dynamic membranes are and the important roles proteins play in various biological processes. The fluidity of membranes allows proteins and lipids to move across the bilayer. With the hydrophilic ends interacting with water and the hydrophobic tails facing inward, the phospholipids are arranged to form a stable structure that acts as a barrier.

Therefore, the correct options are A, B and D.

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Your question is incomplete, most probably the complete question is:

Biologists use the fluid mosaic model to describe membrane structure. Which statements about the fluid mosaic structure of a membrane are correct? Select the three correct statements.

The diverse proteins found in and attached to membranes perform many important functions.Because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane.The kinky tails of some proteins help keep the membrane fluid by preventing the component molecules from packing solidly together.The framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.Membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer.

Judging from information obtained in surveys, the dominant abused prescription pain relieving medication is ______

Answers

The dominant abused prescription pain relieving medication is hydrocodone. This drug is also called Vicodin, Norco, or Lortab. This drug is easy for a person to get addicted to and is currently one of the risk factors contributing to the deaths of Americans.

Which Greek geometer founded a philosophical society that devoted itself to the study of mathematics? Thales Pythagoras Euclid Hippocrates

Answers


pythagoras is the answer.

Answer:

The correct answer is pythagoras.

Explanation:

Pythagoras was a greek geometer. He created the famous mathemetics formula called pythagoras formula that is helpful to find the relationship between the all three sides of triangles. Pythagoras formula has significant contribution to world, especially in architectures.

Thus, the correct answer is pythagoras.

which term refers to the structure that form the surface of a cell separating it content from the outside world

Answers

cell membrane! OWO hope this helps?


what is the definition of homozygous

Answers

When an individual has two of the same allele, whether dominant or recessive, they are homozygous. 

Homozygous refers to the condition where an individual possesses two identical alleles for a particular gene, either both dominant or both recessive, impacting the expression of traits and contributing to the genetic diversity within a population.

Homozygous refers to a genetic condition in which an individual possesses two identical alleles for a particular gene, both inherited from either the mother or the father. In a diploid organism, such as humans, each individual inherits one allele from each parent for a given gene.

The term homozygous is derived from "homo," meaning same, and "zygote," which is the initial cell formed when two gamete cells (sperm and egg) fuse during fertilization. The alleles can be either dominant or recessive, representing different forms of a gene. If an individual is homozygous dominant, it means both alleles are the dominant form. If homozygous recessive, both alleles are the recessive form.

For example, in a simplified scenario where "A" represents the dominant allele for a certain trait and "a" represents the recessive allele, an individual with the genotype "AA" is homozygous dominant, while an individual with the genotype "aa" is homozygous recessive.

Homozygosity plays a crucial role in determining the expression of traits in an organism. It influences the phenotype, or observable characteristics, of an individual. Homozygous individuals express traits according to the specific alleles they carry, providing insight into the inheritance patterns and diversity within a population.

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Research indicates that ___ releases painkilling chemicals in the brain

Answers

Running releases painkilling chemicals in the brain called endorphins. Studies indicate that the level of endorphins in the blood increases during aerobic exercise causing a state called "runner's high" and reducing pain. Interestingly enough, drugs like morphine, heroin and opium have some similar characteristics to natural human endorphins, Running produces these chemicals and they bind with opiod receptors in the nervious system to produce pain relief and mild euphoria during exercise. Running has been associated with increase endurance, injury resistance and the capacity to endure pain based on these characteristics.

what is the kingdom of fungi

Answers

the Fungi kingdom is one of the groups in Classifying organisms
The kingdom of fungi is made up of variety of organisms, such as mushrooms, yeast, molds, etc. The organisms in this kingdom live by decomposing and absorbing the organic molecules on which they grow.
 The major characteristics of the organisms in the fungi kingdom is that they possess hyphae, which they use for absorption of nutrients. 
The organisms in the fungi kingdom are multi cellular eukaryortic and are incapable of producing their own food, that is, they are heterotrophs.

The notion that our brain organization and anatomy can change is called __________. A. recovery B. experience C. neurogenesis D. plasticity

Answers

The answer is D. Plasticity

Hope this helps

The right answer is D. plasticity

Brain plasticity describes the ability of the brain to reshape its connections according to the environment and the experiences of the individual.

From the fetal life, connections between neurons are put in place. Later, after birth, some connections are preserved and others disappear.

The cerebral plasticity is at work during the apprenticeships which require the reworking of the nervous circuits. This is when some connections are reinforced between neurons (synapses). Indeed, the brain is not immutable. On the contrary, it evolves throughout life.

Cerebral plasticity is also possible thanks to undifferentiated cells that can replace accidentally destroyed neurons. For example, in the rat, if vibrisses (whiskers playing a sensory role) are removed, the organization of neurons in the brain is changed. The disappearance of a vibrissa leads to the reorganization of the somatosensory cortex.

Which genetic condition is found at an unexpected high frequency among the hopi native americans?

Answers

Albinism is a genetic condition that is frequent among the Hopi of North America. It a congenital disorder caused by a lack of pigmentation in the skin. The frequency has been estimated at approximately 1 in every 200 individuals. The high frequency of this mutation has been attributed ti inbreeding. 

A key characteristic of a pseudoscience is that incorrect theories are

Answers

A key characteristic of pseudoscience is that incorrect theories are NEVER CORRECTED OR CHANGED.
Pseudo scientists based their beliefs on claims which can not be proofed or verify, when these claims are incorrect, they make no attempt to change it but rather they will look for another explanation to give to it.

Using the table shown, identify which proteins would migrate together during sds-page in the absence of 2-mercaptoethanol.

Answers

As there is no table I'm going to attempt to explain in such a way that yo can solve it.
2-mercaptoethanol is used to denaturate proteins converting them in elongated proteins and, therefore, having them migrate at different rates in the gel depending only on their size. In the absence of 2-mercaptoethanol, the proteins are not elongated, mattering to their migration not their size but their 3D conformity. The proteins that would probably migrate together during sds-page in the absence of 2-mercaptoethanol would be those that have a similar 3D conformity.

The nurse and the client are using therapeutic communication skills. which statements are true of concrete and abstract messages? select all that apply.

Answers

Abstract messages include figures of speech that are difficult to interpret. And abstract messages are best used for persons who are anxious. The explanation behind this is abstract messages contain figures of speech that are tough to interpret. Concrete messages are clear, direct, and easy to understand. Concrete (not abstract) messages are significant for accurate information exchange. Abstract (not concrete) messages necessitate the listener to interpret what the speaker says. Concrete (not abstract) messages are best used for persons who are anxious.

IMMEDIATELY ANSWER! 15 POINTS!

In which part of the cell is the majority of the energy released from the breakdown of glucose?

Answers

Answer:

Explanation:

B.

Why is the percentage of food eaten a good number to use? Explain.

Answers

type of food), and both the number and percentage of the total food items eaten by each type of bird. Create a bar graph of percent food eaten with 36 bars (a bar for each of the six species in environment 1, env. 2, etc.) using a program like Excel. Label your graph, and color code the bars for emphasis. Include a legend which indicates the color of each species. Try this pre-built Excel table to enter and graph your data. Hope this helps you out. 

The percentage of food eaten is a good number to use because it compares the number of food eaten to the number of birds in the flock. If the resulting number from this multiplication is low, then the flock is unsuccessful in the collection of food - causing it to shrink. If the resulting number is high then the flock has been successful in the gathering of their food - causing the flock to grow.

The structure of eugenol is given below. select which functional group below is present in eugenol.

Answers

The alcohol functional group is present in eugenol.

The -OH group is termed as the alcohol group in organic molecules and molecules that have this group contain "ol" in their names. Other examples of compounds with the alcohol functional group are ethanol, phenol and methanol.

Which of the cellular organelles would be included in membranous canals and vacuoles?

Answers

Below are the cellular organelles would be included in membranous canals and vacuoles:




The endomembrane system - is a progression of compartments that cooperate to bundle, mark, and ship proteins and atoms. In your cells, the endomembrane framework is comprised of both the endoplasmic reticulum and the Golgi device. These compartments are folds of films that shape tubes and sacs in your cells 





endoplasmic reticulum - a system of membranous tubules inside the cytoplasm of a eukaryotic cell, nonstop with the atomic film. It, for the most part, has ribosomes joined and is engaged with protein and lipid combination. 




Golgi apparatus  - accumulates straightforward atoms and joins them to make particles that are more perplexing. It at that point takes those huge atoms, bundles them in vesicles, and either store them for later utilize or sends them out of the cell. It is additionally the organelle that assembles lysosomes
Final answer:

The Endoplasmic Reticulum and Golgi Apparatus are the organelles included in membranous canals, and vacuoles are membrane-bound sacs involved in storing and maintaining cell structure.

Explanation:

The cellular organelles that would be included in membranous canals and vacuoles are the Endoplasmic Reticulum (ER) and the Golgi Apparatus. The ER is a network of membranous tubules and sacs called cisternae, and it plays an important role in the synthesis of proteins and lipids. The Golgi Apparatus, on the other hand, is involved in the sorting, modification, and shipping of products produced in the ER. Both of these organelles constitute the 'membranous canals' in a cell. Vacuoles are essentially membrane-bound sacs filled with water containing inorganic and organic molecules including enzymes, and play a crucial role in maintaining the shape of plant cells and in storing waste products.

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According to the drug enforcement administration, drug addiction is __________.

Answers

The answer to this question is: a chronic , relapsing brain disease characterized by compulsive drug seeking and use
When we got addicted to a certain drug, our brain will be conditioned in such a way that could convince our entire body that we couldn't be able to live without that specific drug.
This will often caused pain and agony whenever  we try to detoxify ourself and eliminate the drug from our system
Chronic is the answer hope i helped .

A client’s partner uses the call bell to tell the nurse that the client’s membranes have ruptured and “something is hanging out on the bed!” the nurse visualizes an overt prolapsed umbilical cord. what is the priority nursing action?

Answers

The nurse's priority action is to call for help, put on oxygen mask on the patient and prepare for a possible cesarean delivery.

I’m the Illustration, which site is an example of a trench

Answers

The answer would be:

C

If you'd like to know why:

Ocean trenches are made when two oceanic plates CONVERGE. This is what we call convergent boundary, which is the process where two plates collide. When this happens, the less dense plate subducts or goes under the other plate. The point where the plate goes under is marked by a trench.  

Final answer:

A trench is a deep, narrow section of the ocean floor, often formed by tectonic activity. An example is the Mariana Trench, the deepest part of the world's oceans. It would be depicted on an illustration as the deepest, narrow part of the ocean floor.

Explanation:

In the context of geography, particularly geology and oceanography, a trench refers to a long, narrow, and extremely deep part of the ocean floor. These are typically formed by tectonic activity where one tectonic plate subducts or moves underneath another. An example of a trench would be the Mariana Trench in the Western Pacific Ocean. It is the deepest part of the world's oceans, with a maximum depth of more than 36,000 feet. When referring to the illustration, locate the deepest and narrow part representing the ocean floor; that would likely be the trench.

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Organisms that derive their energy from the sun and carbon from carbon dioxide are:

Answers

Salutations!

Organisms that derive their energy from the sun and carbon from carbon dioxide area photoautotrophs. These organisms carry out photosynthesis. Examples of photoautotrophic organisms are: algae, green plants etc.

Hope I helped (:

Have a great day!

What are the common structural characteristics of atp and dna molecules?

Answers

The ATP and DNA molecules, both have a sugar, a phosphate and a base are their common structural characteristics. ATP has ribose sugar and adenine base while DNA contains deoxyribose sugar and all the four different bases of adenine, thymine, guanine and cytosine.
Final answer:

ATP and DNA molecules share common structural characteristics such as sugar, phosphate groups, and nitrogenous bases.

Explanation:

The common structural characteristics of ATP (adenosine triphosphate) and DNA (deoxyribonucleic acid) molecules are:

Sugar: Both molecules contain a sugar component. ATP contains a five-carbon sugar called ribose, while DNA contains a five-carbon sugar called deoxyribose.Phosphate groups: Both molecules contain phosphate groups. ATP has three phosphate groups, while DNA has one phosphate group in each nucleotide.Nitrogenous base: Both molecules contain a nitrogenous base. ATP has adenine as its nitrogenous base, while DNA has adenine, cytosine, guanine, and thymine as its nitrogenous bases.

Daily rhythms of sleep and wakefulness are regulated by the _____, which is located in the _____.

Answers

Daily rhythms of sleep and wakefulness are regulated by the SUPRACHIASMATIC NUCLEUS, which is located in the HYPOTHALAMUS.
Suprachiasmatic nucleus is a brain structure which uses input from the retina to synchronize its rhythm with the daily cycle of light and dark and it is located in the hypothalamus.

When the cervix of a woman in labor is dilated 9 cm, she states that she has the urge to push. which action should the nurse implement at this time?

Answers

The nurse should ready the patient for delivery as this is the second stage of labor where the contractions will be at 2 to 5 minute intervals. The nurse should be ready with anesthesia and sterile tools for episiotomy (surgical enlargenent of the birthing canal, a cut that is later stiched).

If you stub your toe, how does the impulse travel through your nervous system allowing you to pull your toe back and jump up and down in pain?

Answers

As you stub your toe, the impact is sensed by sensory neurons. The impulse created on these neurons, peripheral nervous system, travels then to the central nervous system, where is interpreted as something that's painful and that has to be avoided. Endorphins are released to help soften the pain and then another impulse is released back down, through motor neurons, that will make the effector muscles that will cause to jump and reflex the leg and foot to contract.
Final answer:

When you stub your toe, sensory nerves send a signal to the spinal cord, where an interneuron helps form a reflex arc that prompts a motor nerve to instantly contract the muscles for withdrawal, all without involving the brain.

Explanation:

When you stub your toe, a rapid sequence of events occurs within your nervous system to produce a response. The peripheral nervous system sends a signal from the injured toe to the spinal cord through sensory nerves. At the spinal cord, the signal is transferred to an interneuron and then to a motor nerve, which relays the command back to the muscles in your toe and leg. This connection, known as the reflex arc, allows for an immediate withdrawal response without involving the brain, permitting a quick reaction to potentially harmful stimuli. If you were to step on a sharp object, the pain-sensing nociceptors would activate the motor neurons for the tibialis anterior muscle, causing dorsiflexion of the foot, while an inhibitory interneuron would prevent the plantar flexion by inhibiting the gastrocnemius and soleus muscles, thus minimizing potential injury.

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The _____ of water molecules explains how some insects can walk on water

Answers

Water has a surface skin. Some insects are able to generate tiny bubbles under their bodies which makes them buoyant enough to not break thru the water's skin. This skin is also known as surface tension. Some bugs and small objects (pins or paperclips, etc) can rest on the surface of the water due to surface tension. Water molecules are bipolar and attract each other forming a skin. The bug or paperclip make tiny depressions in the water skin which provides buoyancy. A detergent will ruin the water tension (because it is a wetting agent) and the bug or paperclip will sink.

The surface tension of water molecules explains how some insects can walk on water.

Surface tension is a property of liquids that occurs because of the cohesive forces between molecules at the surface. In the case of water, each molecule is held to the surrounding molecules by strong hydrogen bonds. These cohesive forces are exerted in all directions on molecules in the center of the liquid.

However, molecules at the surface experience the force only from the sides and below, which pulls them more closely together and creates a 'surface film' that is harder to break. This surface film allows small, lightweight insects, like water striders, to walk on water.

They distribute their weight over a larger area, which prevents them from breaking through the surface tension and sinking. Essentially, they take advantage of the strong intermolecular forces at the surface of the water to support their weight.

Which part of a watershed is the high point of land that separates adjacent watersheds

A. The basin
B. The divide
C. The collection area
D. The boundary

Answers

Your answer would be B) The divide (brainliest answer please)

The part of a watershed that separates adjacent watersheds is the collection area.

What is a watershed?

Watershed is a term used to characterize a delimited portion of the territory, drained by a main river and its tributaries. The waters of the hydrographic basin flow in the same direction and go towards the lower portion of the topographic area, following the pattern of the relief.

With this information, we can conclude that the highest part of the hydrographic basin that separates them is The collection area.

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What are reactants in the process of photosynthesis? Check all that apply.
carbon dioxide
oxygen
nitrogen
water
energy
glucose

Answers

Answer:

Carbon dioxide, water, and energy.

Explanation:

Photosynthesis, which means “synthesis using light”, is generally defined as the process by which an organism can obtain its food. This process is accomplished thanks to solar energy, which is captured and transformed into chemical energy. The photosynthesis process occurs in chloroplast-rich tissues, one of the most active tissues being the chlorophyll parenchyma found in the leaves.

Since photosynthesis is a chemical reaction, it has products and reagents. Photosynthesis reagents are carbon dioxide, water and energy, while products are oxygen, glycides and water.

Answer:

A.) Carbon Dioxide, D.)Water, and E.) Energy

Explanation:

Select properties for the most abundant isotope of a particular element are given. which of these properties are the same for the second most abundant isotope of the element?

Answers

Mass number is the same for the second most abundant isotope of a particular element. Hence the correct option is a.

The mass number, representing the total number of protons and neutrons in an atomic nucleus, remains constant for all isotopes of a specific element. Therefore, for the second most abundant isotope of a particular element, the mass number remains the same as that of the most abundant isotope. This is because isotopes of an element share the same atomic number (number of protons) but differ in the number of neutrons, leading to variations in mass numbers.

While atomic number, neutron count, and electron configuration can differ between isotopes, the mass number remains a consistent property across isotopes of the same element. This stability in mass number reflects the cumulative mass of protons and neutrons, providing a crucial characteristic for identifying and distinguishing isotopes within the periodic table. Hence the correct option is a.

Complete question:

Which of the following properties are the same for the second most abundant isotope of a particular element?

A. Mass number

B. Atomic number

C. Neutron count

D. Electron configuration

Under drought conditions, predict a likely change in the water cycle. A) water does not evaporate into air B) less groundwater accumulates C) increased run-off D) increased precipitation

Answers

B) less groundwater accumulates

What is the general shape of the epithelial cells that are nearest the lumen in an empty urinary bladder?

Answers

The general shape of the epithelial cells that are nearest to the lumen during an empty urinary bladder of an individual is transitional cuboidal epithelium, they are cuboidal in shape as they are relaxed and later transition when stretched and filled with urine.

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Long Division for a quadratic polynomial and binomial, please show your work!Quadratic polynomial: x^2-x-6=f(x)Binomial: (x-3) Minerals were an important resource in which American colonies? Cross-bedding consists of many preserved ________ resulting from moving sand dunes. Ritz can eat 8 apples in 15 minutes. How long does it take to eat 16 apples at same rate? Describe how the english colonists differed from the dutch and the french in their interactions with native americans. Each _____ of organisms is divided into classes. order family phylum genus An alcoholic would have overactive ___ in their liver cells. Some works of art can be ephemeral, environmental, and found. a. True b. False An exhibit at Tabu World Square in Japan includes a scale model of the Empire State Building. The model was built using a scale of 1 m : 25 m. The height of the actual Empire State Building is 443.2 meters. What is the height of the model? Round your answer to the nearest thousanths place. Why were the Students for a Democratic Society a significant group in the 1960s? They held the first national protest against the war in Vietnam. They organized an iconic three-day festival of countercultural music. They organized rallies in support of US involvement in the Vietnam War. They held the first sit-ins and teach-ins to assert students right to free speech. Mason deposited $763.21 in a savings account that earns 1.7% simple interest. What is Mason's account balance after nine years? The _____ developed the sixteen career clusters that group careers by similarities. What type of pronoun is used in the following sentence? The plane that crossed the Atlantic was called The Spirit of St. Louis. A. relative B. demonstrative Can someone explain subshell/electron configuration to me? How do governments balance the rights of individuals with the common good? what is the value of each of these digits in 654321 How did Renaissance thinkers imply that the church was backward and barbaric? A. By undermining the church's authority among members of the middle class. B. By making a connection between the church and the Goths. C. By urging churches and cathedrals to promote education. D. By protesting the church's use of public funds to build cathedrals. a[1] Angle Addition Postulate[2] Subtraction Property of Equality b[1] Substitution Property of Equality [2] Transitive Property of Equality c[1] Segment Addition Postulate [2] Definition of Congruent Segments d[1] Segment Addition Postulate[2] Substitution Property of Equality Which feature of large biological molecules explains their great diversity? which feature of large biological molecules explains their great diversity? the diversity of elements found in large biological molecules the many classes of large biological molecules the many ways that monomers of each class of biological molecule can be combined into polymers? Dr. perry is examining academic performance based on parental income level. dr. perry finds that the sample variances are small and the differences between the groups are large. dr. perry expects that the results will be _______. Steam Workshop Downloader