Answer:
Microscopic marine phytoplankton play a critical role in regulating todays carbon cycle yet not enough is known about the process. These tiny organisms consume carbon dioxide from atmosphere and move it to marine sediments in deep ocean. And this process is also known as biological pump<em>.</em>
Explanation:
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Answer: it’s A
Explanation:
Because uni means one and that means unicellular is only made of one cell
Answer:
B.secrete hormones directly into the bloodstream
