Answer:
Kidney
Explanation:
Nephron is the basic unit of structure in the kidney
Answer:
Mutations can be caused by radiation
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In the world's oceans 90% of the biomass is microbial with viruses turning over 20% of that daily. without the turnover of biomass driven by viruses many sources of food would not be present for other organisms
Unicellular - composed of only one cell.
multicellular - composed of multiple cells.