D. Phytoplankton are most efficient
<span>Unidirectional flow in the heart is ensured because the heart contains valves that prevent backflow.
These valves keep the flow of the heart going in one direction (hence the name "unidirectional").</span>
The nucleus is an organelle found ineukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.
Answer:
idhar re baba
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Answer:
O There will be more rapid depletion of natural resources.
Explanation:
as more and more humans are born they will need more and more food homes and many other things, but they will eventualy run out.
Please give me brainly (if it is correct which i am certain it is)