It is A. Those are all decomposers, the other answers like C are all animals. Decomposers are are biotic organisms that break down basically dead plants or animals.
Remember the cell theory by Virchow that states that all cells come from pre existing cells, if a single cell dies, it can be replaced unless it's a brain cell.
The answer would be cerebrovascular disease
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Answer:
B. Relative Dating
Explanation:
Relative dating is when you look at fossils from around the same area or the same estimated time .