During prophase, the parent cell chromosomes — which were duplicated during S phase — condense and become thousands of times more compact than they were during interphase. ... Cohesin forms rings that hold the sister chromatids together, whereas condensin forms rings that coil the chromosomes into highly compact forms.
C because oxygen was a byproduct of photosynthesis and proved to be EXTREMELY important in the atmosphere.
Answer:10 % I'm pretty sure
Explanation:
Answer: Sediment. Hope this helps :^)
I am guessing an Ecological Relationship as it is dependent on it's environment