Answer:
Option c because from what i know they change to have a more specialized type. Hoping this helps!
abiotic factors.
An abiotic factor is a non-living part of an ecosystem that shapes its environment.
by the law of natural selection, daddy charles darwin stated that overpopulation could result in famine and wars, and death would accelerates across nations, so overpopulation is a cause for this because of too many organisms but not enough food, which declined growth rate.
Mitochondria is the powerhouse of the cell. It converts food into energy the cell can use to help keep all the cells in the body functioning.