The bottom part of a cliff is worn away primarily due to erosion by water, which exerts a physical force that breaks down the rock over time.
Explanation:Jordan notices that the bottom part of a cliff is worn away the most near or under the level where the water is. This phenomenon is largely due to the process of erosion, where water flow exerts physical force on the rock, gradually breaking it down and carrying away the particles. This can create smooth surfaces and stepped pools, much like the ones seen in Pant Glas, Scotland. Over time, these forces cause more wear at the lower levels of the cliff where water has consistent contact, leading to an undercutting effect and the formation of features such as the 'The Wave' in the Vermillion Cliffs. Similar processes are observable on Mars, where gullies change with the seasons, likely due to flowing water or sediment.
Final answer:
The bottom part of a cliff is worn away the most at the level where water is due to erosion, which is caused by the constant flow and pressure of water that cuts and shapes the rock over time.
Explanation:
Jordan notices that the bottom part of a cliff is worn away the most near the level where the water is. This is primarily due to erosion, a natural process by which water flow removes soil, rock, or dissolved material from a landscape and then transports it elsewhere. As the constant flow of water interacts with the base of a cliff, it can cut the rock smooth and create features such as small stepped pools, much like the patterns that are observed in 'The Wave' Formation of Vermillion Cliffs. Over time, this erosive action can significantly wear away the rock at the water level. This is particularly evident where flowing water, like rivers or waves, has consistent contact with the rock, resulting in the undercutting and weakening of the cliff base, which can lead to parts of the cliff above to collapse or crumble as well.
which event does not need to take place before meiosis can begin
DNA Replication maybe?
The event not required before meiosis begins is the formation of the gametes (option A), which occurs after meiosis during gametogenesis. Instead, chromosome duplication, cytoplasm increase, and organelle production occur during interphase prior to meiosis to prepare the cell.
The event that does not need to take place before meiosis can begin is A. The formation of the gametes. Gametogenesis is the process that occurs after meiosis where haploid cells develop into mature gametes capable of fertilization. Prior to meiosis, however, the cell must undergo certain preparatory steps during interphase. These include B. The production of cell organelles, C. The production of more cytoplasm, and importantly, D. The duplication of the chromosomes. This ensures that the cell has all the necessary components for the two subsequent rounds of cell division, which will ultimately produce four haploid daughter cells from one diploid parent cell.
During interphase, specifically the S-phase, DNA duplication occurs, which is essential for providing each daughter cell with the correct number of chromosomes. The increase in cell size and organelle duplication are also part of the cell's preparation for division. However, the separation of sister chromatids does not occur during interphase; it occurs later during the actual process of meiosis.
What is the function of the operator in an operon
A. Provide a site on the DNA where the repressor can bind and stop transcription
B. Provide a site on the DNA where RNA polymerase can bind to begin transcription
C. Code for the repressor protein
D. Code for the RNA polymerase protein
The answer is; A
The operator site is usually associated with the promoter region of the operon. This region is bound by a repressor. The repressor acts as a physical barrier so the RNA polymerase does not bind to its promoter, or even if it binds, does not proceed to transcribe the genes.
The function of the operator in an operon is to provide a site on the DNA where the repressor protein can bind and regulate the transcription of genes within the operon. Therefore, option A is the correct answer.
An operon is a functional unit of DNA that consists of a promoter, an operator, and the genes it controls. The operator is a specific DNA sequence located adjacent to the promoter region within the operon.
It serves as a binding site for a regulatory protein known as the repressor.
In the absence of the repressor protein, RNA polymerase can bind to the promoter and initiate transcription of the genes within the operon.
This allows the expression of the genes and the production of their corresponding proteins.
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PLEASE HELP ME!!!!!!!!!!!! ITS URGENT!!!!!!!!!!!
28.Explain why mutations often don’t effect the organism.
29. In unit 3 you learned about mitosis, this unit you learned about meiosis. These two processes have many similarities by produce two different products. Describe two things that are different between the processes.
30. In complete sentences describe two pros and two cons of genetic engineering.
Mutations often don't effect the organism because they occur in the recessive gene. That means the dominant gene will cover up the effect of the mutation and it won't be expressed.
Meiosis only occurs in sex cells. It creates four daughter cells. Mitosis can occur in any cell and creates two daughter cells.
Two pros of genetic engineering is that it can select the best traits. It also can prevent bad traits. Two cons of genetic engineering is that it decreases the amount of diversity in organisms. It also may have negative side effects that are unknown.
what organ is responsible for the exchange of oxygen and carbon dioxide
The function of the respiratory system is to exchange two gases: oxygen and carbon dioxide. The exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them.
The majority of Earth is covered with water. Water takes longer to heat up and cool down which has an impact on the air temperature. The slow change in water temperature is due to water's
to something in the water
This is because of the high specific heat capacity of water.
Hope helps!-Aparri
Which of the following is an example of how a changing environment is important for the sustainability of living systems?
A.
The water cycle ensures that water used by one organism will be available for another organism in the future.
B.
The erosion of top soil reduces the diversity of organisms in an ecosystem.
C.
Global climate change may lead to the extinction of many species that are unable to adapt to the changes.
D.
all of these
A is the correct answer because we want more diversity in ecosystems and also animals going extinct is not good
Answer:
A. The water cycle ensures that water used by one organism will be available for another organism in the future.
Explanation:
Water is a crucial substance for life on earth. The water cycle is extremely important for the sustainability of living systems, because it collects, purifies and distributes the fixed amount of water on the planet. Through the water cycle the water used by one organism will be available to another organism in the future.
The water cycle is powered by the sun's energy and involves three major processes: evaporation, precipitation and transpiration. Solar radiation causes evaporation of water contained in oceans, lakes, rivers and soil. Evaporation transforms liquid water to water vapor, and later gravity causes water to return to the earth's surface as precipitation. On land, 90% of the water that reaches the atmosphere evaporates from the plant surface through the process of evapotranspiration and from the soil.
Water that returns to the earth's surface as precipitation follows different paths. Most of the precipitation that occurs on terrestrial ecosystems flows superficially and gathers to form rivers and streams. Some of this surface water seeps into the upper layers of the soil and is used by plants and some of it evaporates from the soil into the atmosphere. Some precipitation is converted to ice and stored in glaciers, usually after long periods of time. Some precipitation seeps into the soil and permeable rocks and is stored as groundwater in geological formations called aquifers. A small portion of the water is used by living things.
Which type of cells have a plasma membrane
The plasma membrane. Both prokaryotic and eukaryotic cells have a plasma membrane, a double layer of lipids that separates the cell interior from the outside environment. This double layer consists largely of specialized lipids called phospholipids.
The Plasma Membrane has prokaryotic and eukaryotic cells
math the types of energy to the correct examples. drag the items on the left to the correct location on the right
Answer:
Answer in the picture
Explanation:
The types of energy include Potential (stored energy, e.g. a stretched rubber band), Kinetic (energy of motion, e.g. a moving car), Thermal (energy from heat, e.g. heat from a fire), Chemical (energy stored in chemical bonds, e.g. gasoline in a car) and Electrical energy (energy from electric charges, e.g. a lightning bolt).
Explanation:The question is asking you to match the correct examples of energy to the types of energy. Let's define the different types of energy:
Potential Energy: This is stored energy. An example would be stretching a rubber band. Kinetic Energy: This is energy of motion. An example would be a moving car. Thermal Energy: This is energy from heat. An example would be the heat from a fire. Chemical Energy: This is energy stored in chemical bonds. An example would be gasoline in a car. Electrical Energy: This is energy from electric charges. An example would be a lightning bolt.
Understanding these definitions should help you in your task to correctly match the types of energy with their examples.
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What could silt be compared to?
It could be compared to sand
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the diagram to the right illustrates an embryonic stage of two organisms. which of the following can be determined by observing the embryos shown in the diagram? a) the organisms share a common ancestors b) the organisms belong to the same genus c) the organisms are native to the same geographic areas d) the organisms will grow into anatomically similar adults
Which tools measure the volume of liquid?
.
Volumetric cylinders and volumetric flasks are used to measure volume of liquids contained in them. They are calibrated for volume included in them - this is indicated by the marking "IN". The liquid has accurate volume when it reaches the corresponding marking on the scale. Volume is usually indicated in mL.Apr 27, 2017
graduated cylinder, pipette, and beaker all hold liquidThe correct tools to measure the volume of liquid are graduated cylinders, beakers, pipettes, burettes, and volumetric flasks.
To measure the volume of a liquid accurately, one would typically use a graduated cylinder or a volumetric flask for larger volumes, and a pipette or a burette for smaller, more precise volumes. Beakers can also be used for rough measurements or when precision is not critical. Each of these tools is designed with graduated markings to allow for the reading of the volume of the liquid contained within them. It is important to read the meniscus correctly when using these tools to ensure accurate measurements. The meniscus is the curve in the upper surface of a liquid close to the surface of the container, which can affect the reading of the volume if not accounted for properly.
what does the unequal heating of air masses cause?
Answer:
The uneven heating of Earth's surface produces wind because the air temperature and air pressure are different. The differences in the air causes the air to a lower pressure. !!! Uneven heating of the Earth's surface produces air masses of different temperatures. Cold air sinks, forcing warm air to rise.
One hypothesis regarding the extinction of dinosaurs is that a meteor hit the earth causing an explosion so powerful that dust blocked out the sun. Consider the model above and explain why would this have caused a mass extinction?
There is no model visible, but the main theory as to how an asteroid/meteor impact would cause a mass extinction is that the force of the projectile landing onto the surface of the earth would launch so much debris and material into the atmosphere that it would block out most if not all light from the sun, leading to a inevitable food pyramid crash. As the producers die and become harder and harder to find, primary consumers decline which leads to the decline of secondary consumers, and so on until you reach the apex predators in the ecosystem(s). Hope this helped!
earthquake epicenters were mapped for a 35 year period in the diagram above. the black dots making the epicenters also represent what feature on earth?
A hot spots
B rift zones
C plate boundaries
D sea floor spreading
earthquake epicenters were mapped for a 35 year period in the diagram above. the black dots making the epicenters also represent plate boundaries
what are the causes of earthquake?A sudden release of stress along faults in the earth’s crust can be called as earthquake; the process is like where the tectonic plates move slowly , but they get stuck at their edges due to friction.
When the stress overcomes the friction causes earthquake and the resulting waves propagate through the ground and over its surface generate a shaking that we perceive as earthquakes.
The main causes of earthquakes include Plate tectonics which account for most earthquakes worldwide, Induced quakes caused by human activity, like tunnel construction, Volcanic quakes, Collapse quakes caused by cave-ins, mostly in karst areas.
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How do the cells of a sporophyte stalk differ from egg and sperm cells?
The cells of a sporophyte stalk differ from egg and sperm cells because the egg is only created from the cells of the woman plant cells and is given sperm from the man cells. ''The sporophyte is a stalk that grows after haploid sperm cell.
What would be the impact of excessive deforestation on the Christmas island crab population?
The excessive deforestation on the Christmas island crab would be the reduction of population or possibly extinction.
Final answer:
Excessive deforestation could significantly harm the Christmas Island crab population due to loss of habitat, affecting their nesting, shelter, and food resources. Similar impacts observed in other species suggest potential population declines and compromises to the crabs' ecological roles.
Explanation:
The impact of excessive deforestation on the Christmas Island crab population would likely be significant and detrimental. These crabs depend on the forest environment for their survival, including use for nesting, shelter, and food resources. Evidence from other studies, such as the decline in arboreal vertebrates and forest-dependent birds due to the loss of natural habitat, indicates that habitat destruction from deforestation leads to marked population declines and local extinctions in a variety of species groups. For instance, declines in orangutan populations in selectively logged forests and the sensitivity of bats to changes in canopy cover and understory foliage density, which affect foraging and echolocation strategies, underscore the potential risks to the Christmas Island crab population. Additionally, alterations in the ecological roles of species due to diminished population levels can lead to the functional extinction of key species, thereby compromising the quality of ecological services they provide.
the succesion of insects coming to the dead body is_________
flies --> beetles --> larger organisms (wasps, spiders)
What cause substitution mutation
A substitution is a mutation that exchanges one base for another (i.e., a change in a single "chemical letter" such as switching an A to a G). Such a substitution could: change a codon to one that encodes a different amino acid and cause a small change in the protein produced. ... These are called silent mutations.
The answer for this question is sickle cell anemia
Two laws of thermodynamics
First law is Law of Conservation of Energy it states that enegy cant be made in a isolated system. The second law is Law of Thermodynamics it states that the entropy of any isolated system always increases.
1.) ANALOGY -- Lithosphere: rigid as asthenosphere: ____________.
A.) mutable
B.) static
C.) inflexible
D.) unyielding
2.) What type of boundary, shown here, explains how the Mid Atlantic Ridge moves?( Look at picture)
A.) Divergent
B.) Subduction
C.) Convergent
D.) Transform
3.) In the mantle convection system, cooler material rises above hotter material in Earth’s mantle.
A.) True
B.) False
The correct answer is C. Inflexible
Answer:
By analyzing the picture given below we can say that:1)Option- (A) Mutable,
2)Option-(A): Divergent,
3)Option-(B): False,
The explanation is given below:
Explanation:
The Asthenosphere:The layer beneath the lithosphere, and is above the earth's mantle, where the resistance to the plastic flow is low and there is thought to be the process of convection happening in the layer.
Mid Atlantic Ridge Moves:The mid Atlantic ridge (Ocean ridge system) which is due to the resulting divergent movement between of the ridges in between the different tectonic plates of the earth(the Eurasian and North American, and African and South American Plates).
Convection System:A very slow mechanism in the structure of the earth, in which through the process of convection currents the heat is carried from the interior to the surface of the earth.
How are seeds different from spores?
A) Seeds have endosperm which provides nourishment for a new plant, but spores do not have any stored food supplies?
B) Spores involve eggs and sperm cells, while seeds do not.
C) Spores will germinate and must find good soil to survive. Seeds can survive in extremely harsh conditions.
D) Spores have an endosperm and involve sperm and egg cells, while seeds do not.
Cellular respiration takes place primarily in organelles called mitochondria. Some textbooks claim that "Mitochondria make the energy needed for biological processes." Explain what is wrong with this sentence and give a more accurate sentence.
Mitochondria do not make energy but convert stored energy into ATP for biological processes.
Explanation:The claim that "Mitochondria make the energy needed for biological processes" is inaccurate because mitochondria do not create energy but rather convert stored energy into a usable form. The primary purpose of mitochondria is to produce ATP through a process called cellular respiration. ATP is the molecule that provides energy for cellular processes.
A more accurate sentence would be: "Mitochondria convert stored energy into ATP, which is the molecule used for biological processes."
Keywords: mitochondria, cellular respiration, energy, ATP, biological processes
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how does carbonic anhydrase change the reaction between carbon dioxide and water?
It catalyzes the reaction by making it fast (both forward and reverse reactions).
Naturally, the reaction between CO2 and H2O is very slow in the formation of carbonic acid. However, in the blood, due to the presence of the enzyme, the reaction is much rapid by millions of factors. This is because the enzyme reduces the activation energy of the reactants. The enzyme is important in respiration of cells and in pH regulation,
What list of articles would an ecological scientist most likely include when describing a forest community?
The ecological community can be defined as a group of different species, which are dependent on one another in a particular location. The ecological community only include the flora and the fauna, it does not include the abiotic factors, such as air, water, soil or climate. So, deer, wolf and trees are the components of a forest community.
PLZ ANSER THIS
Louise described two layers of Earth's atmosphere.
Layer A: Contains the ozone layer which absorbs harmful radiation
Layer B: Water cycle causes wind in this layer
Which statement is most likely true?
Layer A is the exosphere and Layer B is the thermosphere.
Layer A is the thermosphere and Layer B is the exosphere.
Layer A is the stratosphere and Layer B is the troposphere.
Layer A is the troposphere and Layer B is the stratosphere
✿ Stratosphere contains the Ozone Layer
✿ Water Cycle Causes Wind in Troposphere
So, Layer A is Stratosphere and Layer B is Troposphere
Third Statement is True
Answer:
C c-ertaintly should be your answer :D ik im cornry
Explanation:
25 points plz help (biology honors-high school)
18. Sam’s mother has type O blood. Her father is type B blood, with the genotype BO. What are the possible blood types that Sam could have? (use scratch paper to make a punnett square)
Final answer:
Sam could potentially have Blood type B or Blood type O, due to the genotypes of his parents. His mother's ii genotype and his father's BO genotype limit the possibilities to these two types, with Blood type A and Blood type AB being impossible in this scenario.
Explanation:
When considering the ABO blood groups, a person's blood type is determined by the alleles they inherit from their parents. Sam's mother has type O blood, which means her genotype is ii, as O is recessive. Sam's father has type B blood with a genotype of BO, where B is dominant and O is indicated by the allele i. To determine the possible blood types for Sam, we can construct a Punnett square. The mother can only contribute the i allele, and the father can contribute either B or i. This results in two possible genotypes for Sam: Bi (which would result in Blood type B) or ii (which would result in Blood type O). Other types, such as Blood type A or Blood type AB, are not possible with these parental genotypes.
An energy pyramid is a graphical model of energy flow in a community. The different levels represent different groups of organisms that compose a food chain. An energy pyramid’s shape shows how the amount of useful energy that enters each level. Chemical energy, in the form of food, decreases because some is used by the organisms in each level. The source of the chemical energy is the producers, that rearrange carbon dioxide and water in the presence of light to make ________ through the process of ______________.
An energy pyramid depicts the decline in energy, biomass, and organism numbers across trophic levels within an ecosystem. Producers use photosynthesis to create energy, which is then passed up the food chain with a significant loss at each step, leading to a maximum of four or five trophic levels.
Explanation:An energy pyramid is a graphical model illustrating the energy flow within an ecosystem. The various levels of the pyramid represent different trophic levels in a food chain, starting from the producers at the base to the apex predators at the top. Producers utilise sunlight to create chemical energy through the process of photosynthesis. This energy is then transferred to the primary consumers and subsequently to higher trophic levels, although with a significant energy loss at each step. Typically, about 90% of the energy is lost, mostly through metabolic processes and as heat, with only about 10% being passed to the next level. This energy loss is the reason why energy pyramids are always upright and why there are usually no more than four or five trophic levels, as there simply isn't enough energy to support additional levels.
The ecological pyramid provides a visual representation of the decline in energy, biomass, and number of organisms from lower to higher trophic levels. Assuming that producers in an ecological pyramid have 1,000,000 kilocalories of energy, only about 10% of this energy, or 100,000 kilocalories, would be available to the primary consumers. This continues up the pyramid, with further reductions at each subsequent level.
Which statement accurately describes an interaction between plants and animals? A. Animals release O2, required for plant survival. B. Animals release CO2, required for photosynthesis. C. Plants provide humans with atmospheric nitrogen. D. Plants provide humans with CO2 for respiration.
The answer is B.
Animals do cellular respiration which requires the intake of oxygen and the output of carbon dioxide. In order for plants to do photosynthesis, they need carbon dioxide to be able to make oxygen for animals to breathe.
Answer:
B
Explanation:
The correct answer in this question is option B:
Animals release CO₂, required for photosynthesis.
While every other statement may be close to the truth, they are not quite correct. For example:
Animals release CO₂ (not O₂) which is necessary for plant survival.
Plants provide humans with O₂ gas (not atmospheric nitrogen)
Plants provide humans with O₂ (not CO₂) for respiration
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REGIONS SCIENCE
you need help with 28 and 29?
Which type of fossil is formed by sediments and found in sedimentary rock?
mold of a fish
petrified wood
carbon film of
a leaf preserved insect
Answer: carbon film of a leaf preserved insect
Sedimentary rock is a rock that is formed by the compaction of sediments with the effect of heat and pressure inside the earth crust. These rocks are responsible for preserving fossils of dead animals and plants. When an organisms dies, the carcass decomposed by the decomposers present in the soil. The hard parts remains undecayed like wood, leaves, shells, bones and other skeleton remains. These remains are covered by the piles of sediments formed sedimentary rocks after compaction. A carbon film is the trace of organic matter that forms the replica of the animal or plant structure over another structure like rock. Sedimentary rock will provide a adequate pressure on the body of the organism, will result in formation of a carbon film of a leaf preserved insect.
Answer:
its B
Explanation: