Water is the answer because most chemical reactions happen in water
Eutrophication can result from excess nutrients pollution in bodies of water
Amber fossil is <span>formed when remains are trapped tree sap
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<span>Petrified fossil are preserved remains that are transformed into rock.
Imprint fossils are </span><span>impressions from very thin objects trapped in mud and transformed into rock.
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Trace fossils are </span><span>preserved records of life like a footprint or a trail imprint fossils a raised fossil that has filled in the impression from.
Mold fossils are</span> formed when remains of living things leave an impression on a rock.
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Cast fossils are </span><span>a raised fossils that have filled in the impression from a mold.</span><span>
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Answer:
The correct answer is option d. "Protein movement is limited by the presence of a diffusion barrier".
Explanation:
There are transportation mechanisms that allow to take up nutrients to the apical surface of the epithelial cells. The transportation process is best describes as protein movement limited by the presence of a diffusion barrier. There are structures known as tight junctions, located just below the apical surface . These tight junctions acts as diffusion barriers, separating the extracellular fluids surrounding the apical and basolateral membranes.
