it is o for oxygen because I studied it
Answer:
Two electrons
Explanation:
The oxygen atom shares one pair of valence electrons with each hydrogen atom. Each pair of shared electrons represents one covalent bond, so two covalent bonds hold the water molecule together.
What is not an example of negative feedback
Blood clotting
Shivering
Sweating
Digestion
Blood clotting is a positive feedback.
Explanation:All the physiological process occurring in the body are monitored by two types of mechanism called negative feedback and positive feedback.
Positive feedback is the reaction which occurs with the feedback from the actions the system has performed. The blood clot occurs with palette formation which is regulated with the blood lose (continuous feedback).
Negative feedback is a reaction that is the invert of the change distinguished, meaning it capacities to decrease the change. A change is recognized by a receptor and an effector is made to incite a contrary impact which facilitates further reaction.
The physiological process such as shivering, sweating and digestion are examples of negative feedback.
Which is not a characteristic of Marine West Coast climates
what are the answer choices?
Answer:
strong winter rainfall maximum
Explanation:
Which of the following strategies can reduce urban spraw
Answer:
-
Explanation:
I dont see anything.
Scientists who use principles to develop new technology work in the field of ___ science.
um i think its mechanical. because mechanical science is a field of science that invents technology. and uses principles to do so.
can i get brainiest.
Answer:
The answer is applied science.
How many calories does tali’s have
Pretty sure they have 36 calories per a tbsp.
15. Which is not a problem associated with the increased use of nuclear energy?
Increased use of nuclear energy is increased power sources to other places.
How does radiation from the sun affect earth?
The Sun's affect on global warming can mostly be attributed to variations in the near-infrared and visible wavelengths of solar radiation. As previously stated, these types of radiation are absorbed by the lower atmosphere, the oceans, and the land
Final answer:
Solar radiation is absorbed by Earth's surface, causing warming, while some is reflected back into space. It affects the ionosphere by altering its height due to ionization and can disrupt satellites. Additionally, it plays a key role in the greenhouse effect and Earth's radiation balance.
Explanation:
The effect of solar radiation on Earth is extensive, influencing numerous aspects of the environment. When radiation from the sun reaches Earth, it is mostly absorbed by the Earth's surface, which warms our planet. However, some of this energy is reflected back into space by the surface and atmosphere.
Radiation also impacts the ionosphere, a layer high in Earth's atmosphere. The ionosphere's boundary fluctuates between approximately 60 kilometers during the day to about 85 kilometers at night due to the sun's ionization effects. Solar radiation, which includes X-rays and gamma rays, creates ionization levels similar to those during the daytime, and it can even prompt sensitive satellites to shut down their electronics to protect against damage.
Most solar radiation falls within the visible spectrum, but ultraviolet radiation is also significant as it is absorbed on its way to Earth's surface, lessening UV levels experienced on the ground. The Earth emits radiation too, but in longer, infrared wavelengths which are associated with the greenhouse effect. Greenhouse gases absorb this infrared radiation and re-emit it, causing warming of the Earth's surface and lower atmosphere.
The radiation balance of the Earth is critical; the planet must emit as much energy as it absorbs to maintain a stable temperature. When greenhouse gases absorb and re-emit radiation, they contribute to this dynamic balance but also cause global temperatures to rise under certain conditions.
The discovery of the structure and make-up of DNA was very competitive, even dishonest at times, between scientists
of various countries. Therefore, the Human Genome Project was a monumental accomplishment because the project _______
A.) discovered DNA structure and profiling
B.) developed a database to catch criminals across the world
C.) brought the world's research together and made it available to
D.) found the cause of many genetic diseases
Answer:
C
Explanation:
Human genome project remains the world's largest collaborative biological project that determined the sequence of human genome and the genes that it contains. The sequencing holds benefits for many fields, for example human evolution, molecular medicine etc. This project through its sequencing helped to understand diseases including identification of mutations linked to different forms for cancer, advancement in forensic applied sciences, agriculture , bioprocessing etc.
What is photosynthesis?
Answer:
photosynthesis is the process that plants go through using energy from the sun to make food for themselves that get passed to the rest of the ecosystem
why do we see different phases of the Moon
During the lunar month, the Moon goes through all its phases. You can see the phases drawn in the image below. Just like the Earth, half of the Moon is lit by the Sun while the other half is in darkness. The phases we see result from the angle the Moon makes with the Sun as viewed from Earth.
hope this helps :)
Moon is the natural satellite of the Earth, which rotates and revolves around the Earth. The moon reflects the sunlight, which makes it visible to the Earth.
The different phases of the moon are seen due to the revolution of the moon around the earth. It can be explained as:
1. The moon does not have its own light, such that it reflects the sun's light.
2. When the moon revolves around the Earth, it can reflect some portion of the light. The different portions of the illuminated moon result in different phases.
3. The phases of the moon are crescent, gibbous, full moon, waning, and waxing moon.
Thus, the moon when orbits around the Earth and gets reflected at some portions will give rise to different phases.
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Who is Charles darwin? What were some of his contributions to the theory of evolution
Charles Darwin:
Charles Darwin was an English biologist, naturalist and others. He contributed to science in many different way, but he's most regarded for his evolution theory which can be found in his famous book, On the Origin of Species.
Evolution, Darwinism:
When he first published his book many people thought he was crazy and that his theory was a total blasphemy, and they even created what we would now call a meme, as we can see in the first image. Turns out, the book was published in 1859, which meant he had enough evidence to prove his theory due to the fact that in 1831 he did his famous voyage in the HMS Beagle to the Galapagos, where he studied different species of finches.
But, going deeper in to the theory, he suggested that animals developed in tiny steps as natural selection went causing modifications to their genes so that they could be more competitive in their environment. That was also part of his proposal to how new species originated - at one point, so many changes would have occurred that the product of natural selection would be a total new species.
A visual way of representing his theory would be with the famous "monkey-scale" where we can see how our upright and non-hairy appearance originated, as we can see in the second image.
Hope it helped,
BiologiaMagister
deforestation is the process of people moving to city areas. true or false?
False
Deforestation is the process of loss or destruction of naturally occurring forests.
What two things protect our brain from damage?
The brain is protected by the bones of the skull and by a covering of three thin membranes called meninges. The brain is also cushioned and protected by cerebrospinal fluid.
During which era did life begin transitioning from ocean to land?
Paleozoic
Mesozoic
Neoproterozoic
Eoarchaean
Answer:
Paleozoic
Explanation:
It is during the late Paleozoic era, in the Carboniferous and Permian Periods, approximately 300 million years ago, that this transition occurred. During this period, there were higher global temperatures and tropical swamps dominated land on the Earth. This allowed amphibians to move farther inland. Later, synapsids and diapsids now dominated the land.
During the Paleozoic era, life began transitioning from the oceans to land. This era was a time of significant evolutionary change, with the emergence of plants and many types of animals onto the terrestrial landscape. So the correct answer to the multiple-choice question is Paleozoic.
The Paleozoic era, which is a part of the Phanerozoic Eon, extended from about 541 million to 252 million years ago and is known for the proliferation of life. Within this era, there was a great diversification of life forms, specifically during the Cambrian period where we see the 'Cambrian explosion' of diverse multicellular organisms. Moreover, it is during the later periods of the Paleozoic era that we observe life-first ventures onto land—evidenced by the earliest land plants and animals like amphibians and insects. Sedimentation, tectonics, and evolutionary evidence found in the fossil records all support this crucial transition period. The Mesozoic and Cenozoic eras followed the Paleozoic, with the Mesozoic known for the era of dinosaurs, and the Cenozoic characterized by mammalian evolution and the rise of modern ecosystems.
When an organism is finished growing, which of the following best describes what happens on the cellular level?
A. Its cells stop reproducing.
B. Its cells reproduce and die at the same rate.
C. Its cells stop growing.
D. Its cells grow and shrink at the same rate.
it’s cells reproduce and die at the same rate
Answer: Option B
Explanation: When the organism has stopped growing then there is no visible growth in the body of the organism.
When the cells proliferate and dies at the same rate, the change is zero and the body seems to be finished growing. This can be described on the cellular basis that the number of cells remains constant as the rate of proliferation and death is same.
What's the role of a primary consumer in the food web? A. To eat secondary consumers and produce energy B. To combine parts of the ecosystem into one nutrient C. To eat producers and produce energy D. To break down organic matter in the soil
The answer is C To eat producers and produce energy
Answer:
C. To eat producers and produce energy.
Explanation:
In a food chain, a series of organisms are linked to together in a process whereby one eats the other and provides energy at each trophic level.
Every food chain typically starts with the producers who obtain the energy either through the sun or chemicals and make their own food,
The organisms who eat the producers are known as primary consumers and they are the ones who provide energy to the next trophic level of the secondary consumers .
The food chain is as follows:
Producer (plant) ---> primary consumer (herbivore)---> secondary consumer (carnivore)- --> tertiary consumer
Jessica recently moved to an apartment in the industrial area of Readington City. She noticed that the roads in her neighborhood warm up quickly. She also noticed that the temperature in her apartment is typically much warmer than the temperature of her previous apartment, which was near the mountains on the outskirts of the city. What is responsible for the change in temperature?
A. Urban areas absorb more of the Sun’s radiation.
B. Mountainous areas don’t absorb the Sun’s radiation.
C. Mountain areas experience more precipitation.
D. Urban areas experience lower precipitation.
the answer is A. because the roads are black and take in more light which makes the area hotter
Answer:
The correct answer is option A, that is, urban areas absorb more of the Sun’s radiation.
Explanation:
The cause for the urban regions exhibiting a warmer climate in comparison to the mountainous regions is the maximum captivation of the radiation of the Sun by these regions. This is termed as the urban heat island effect. This results in the air to be warmer in comparison to the other regions.
There are various causes related to the elevation in the temperature. One of the causes is exhibiting a huge number of roads and buildings in the urban regions. This takes part in the captivation of the heat from the Sun. Another cause is the absence of green plants, which absorbs the heat and the cools the surrounding.
Name three ideas about geologic change
Answer:
catastrophism
gradualism
uniformitarinism
Explanation:
There were several theories associated with evolution. In the theory, evolution was defined as the biological change process that has decedents originate from different ancestors.
Uniformitarinism is the prevailing theory of evolution. It focuses on the formation of the rocks and the earth as we know it today
Gradualism focuses on the gradual change over a long time.
Catastrophism focuses on the catastrophic formation of matter from a mass of matter.
Three ideas about geologic change are Plate Tectonics, Weathering and Erosion, and Climate Change.
1. Plate Tectonics: Plate tectonics is a widely accepted scientific theory that explains how the Earth's lithosphere (the rigid outer layer) is divided into several large plates that move and interact with each other.
These plates can collide, separate, or slide past each other, causing various geological phenomena.
2. Weathering and Erosion: Weathering and erosion are processes that contribute to the transformation and transportation of rocks and landforms.
Weathering refers to the breakdown and alteration of rocks at or near the Earth's surface due to physical, chemical, and biological processes. It includes processes like freeze-thaw cycles, chemical reactions, and the actions of plants and animals.
3. Climate Change: Climate change refers to long-term shifts and variations in global or regional climate patterns. It is driven by various factors, including natural processes and human activities.
Geological evidence, such as ice cores, sediment layers, and fossil records, provide insights into past climate changes that have occurred over millions of years.
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An increase of carbon dioxide in the tissues will result in:
A the bonding capacity of hemoglobin for O2 increasing.
B bicarbonate and hydrogen ion concentration increasing in the blood.
C pH of the blood increasing.
D less CO2 and water found in the plasma.
the answer is B. bicarbonate hydrogen ion concentration increasing in the blood.
An increase of carbon dioxide in the tissues will result in:pH of the blood increasing.
What will increase pH of the blood ?Blood pH increases when people ingest substances that contain or produce acid or when the lungs do not expel enough carbon dioxide.If the pH of blood get increased leads to nausea, vomiting, and fatigue and may breathe faster and deeper than normal.The lower the pH, the more acidic the blood. A variety of factors affect blood pH including what is ingested, vomiting, diarrhea, lung function, endocrine function, kidney function, and urinary tract infection. The normal blood pH is tightly regulated between 7.35 and 7.45.pH of the blood increase when carbon dioxide in the tissues increase.
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what has maximum atp production, Aerobic respiration or Anaerobic respiration?
Anaerobic respiration makes a total of 2 ATP. Aerobic respiration is much more efficient and can produce up to 38 ATP with a single molecule of glucose.
In humans _______ of the DNA is the same.
a. 50%
b. 25%
c. 0%
d. 99.9%
The correct answer is (D) 99.9%
Explanation:Deoxyribonucleic acid, more commonly known as DNA, is a complex molecule that contains all of the information necessary to build and maintain an organism. There are more than three million differences between the genome of two persons. Humans share 99.9 percent of their genome sequence with each others.
Which of the following factors is biotic?
it’s food i have to have 20 characters so
Biotic factors are the living components of an ecosystem.
I believe the correct answer is C food. Food meaning plants, berries, and living consumable organisms.
what is a genotype and what is a phenotype?
A genotype is the set of genes in our DNA which is responsible for a particular trait. And a phenotype is the physical expression, or characteristics, of that trait. Like for example, two organisms that have even the minutest difference in their genes are said to have different genotypes.
Hope this helps:)
Phenotype is the term used to describe the morphological, physiological and behavioral characteristics of the individual that we can visualize and that arise through the interaction between the genotype and the environment. The phenotype can be motivated in some situations. For example, let's say your parents have black hair, and you have inherited this characteristic from them. This characteristic is something that we can visualize, that is, it is the phenotype. However, you can change the color of your hair, or your hair may appear lighter due to the action of the sun and the chlorine of the picina.
The genotype, on the other hand, is the term used to describe your genetic makeup based on the genes you have inherited from your country. For example, we can say that your father has black skin represented by the "AA" genes, however your mother has a white skin represented by the "aa" genes, you received a gene from your mother and one from your father, with the genetic makeup (genotype) the "Aa" alleles and the black skin phenotype.
What gets passed from one cell to another in sexual reproduction? A. chromosomes B. individual genes C. individual bases of DNA D. pairs of DNA bases
It is A chromosomes
Tell me if the answer is wrong
Answer:
Chromosomes!! just did it on study island
Explanation:
Which environment change is likely to allow the most individuals to survive
A. Transition from a meadow to a forest
B. Massive volcanic eruption
C. Oil spill in the bay
D. Acres - wide forest fire
I’m pretty sure the correct answer would be A.
Based on option A the transition is just more trees, which gives out more oxygen. B having a massive volcanic eruption can cause certian things to die off and could eventually kill off certian species and forms of air. Example would be killing of the trees. C oil spill in the bay can cause damage by pollution and dieing of species. D acres- wide forest fire. Again that would take away oxygen supply and take away natural habbitates of animals/species. There for the answer would be A.
Which cell is more specialized?
-Nerve cell
-Cell from the morula
-Cell from the blastula
-Zygote
Which answer lists different behavioral responses that some animals use as defense mechanisms?
A) camouflage, mimicry, and stingers *
B) hibernation and migration
C) courtship and breeding behaviors
D) nesting and food gathering
You answer to this question will be: A) Camouflage, Mimicry, and Stingers*
I’m almost positive the answer is choice A
Which age pyramid has the largest base of pre-reproductive population ?
The age pyramid with the largest base of pre-reproductive population is typically observed in countries with rapid population growth.
Explanation:The age pyramid with the largest base of pre-reproductive population is typically observed in countries with rapid population growth, particularly in underdeveloped countries where individuals do not live to old age due to less-than-optimal living conditions. These countries often have a pyramidal age structure diagram, indicating a preponderance of younger individuals, many of whom are of reproductive age or will be soon.
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The age pyramid of economically underdeveloped countries tends to exhibit the largest base of pre-reproductive population. This comes from a high birth rate, but also a lower life expectancy. In contrast, developed countries usually have a smaller pre-reproductive population due to lower birth rates and higher life expectancies.
Explanation:The age pyramid that has the largest base of pre-reproductive population is typically observed in economically underdeveloped countries. Age structure diagrams for these populations often have a pyramidal shape, indicative of a large young and pre-reproductive population. However, fewer of these individuals reach old age because of poor living conditions. For instance, in many parts of Africa and Asia where economic development is lower, there's a large preponderance of younger individuals (Figure 36.17).
On the contrary, developed countries like the United States and Italy exhibit a different age structure. These populations have a flatter structure or even a 'bulging' pyramid shape due to lower birth rates and higher life expectancy. Therefore, there's a lesser percentage of their population in the pre-reproductive age group (Figures 13.7 and 20.5).
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how was the sun created ?
The sun was formed by a rotating cloud of gas and a bunch of dust called the solar nebula.
The sun is not a planet it is a star so how is a star created there are 3 Types of stars Blue,Red and yellow dome are made by star Collision
Organisms may contain up to five levels of organization within their bodies. Which level of organization is shown by the liver?
tissue
organ
organism
organ system
The level of organization shown by the liver is organ level as the liver is an organ. Thus, the correct option is B.
An organ is made up of multiple tissues that are joined together and perform specific functions that contribute to a major function of the body. For instance, liver, kidney, stomach, etc.
The liver is the second largest organ in the body and is a part of the digestive system. Liver is made up of several types of tissues which includes hepatic laminae, bile canaliculi, bile duct, hepatic ducts and hepatic sinusoids.
Liver carries out multiple functions related to metabolism and detoxification.
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