Answer: <em>I think is point a), not sure.</em>
Explanation:<em> if they drive at the same speed, they be closests to a).</em>
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Answer:Margulis
She is the one who discovered it
Answer: The oxygen content at the source of the streams or rivers is higher as compared to the mouth of the river. Consequently, the organisms which require more oxygen tend to find at the source of the rivers whereas the organisms which require less oxygen tend to find at the mouth of the river.
Explanation:
They attach to the chromosomes, line them up during metaphase, and pull them apart during anaphase
The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules.
