What is a key part of Darwin's idea of natural selection?
AEarth is very old.
BEverything has a predator.
COrganisms' characteristics are carried on DNA.
DMore individuals are born than can live on available resources.
AEarth is very old.
BEverything has a predator.
COrganisms' characteristics are carried on DNA.
DMore individuals are born than can live on available resources.