Answer:
C; Carbon dioxide concentrations increase with depth due to less uptake and decomposition of organic matter at depth.
Explanation:
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<span>Sperm are the only human cells to have flagella.</span>
Answer: Option A) nucleus
Explanation:
Prokaryotic cells lack nuclear envelope, thus the nucleus is absent in Prokaryotic cells.
On the other hand, eukaryotic cells possess membrane bound nucleus and nuclear envelope.
Thus, nucleus is the answer
