A carbon sink is a natural or artificial reservoir that accumulates and stores some carbon- containing chemical compound for an indefinite period.
A stem cell is an extraordinary, early stage, unspecified cell that has the potential to develop into a number of specialized cell types.
there important because they can replace cells that have been lost or damaged
I would say just O :) have a good day
Cannot account by itself for the increase in species diversity over time
The Punnet Square is used to determine the genotype and phenotype