What is it called when a habitat is reduced in quality?

a) habitat destruction
b) habitat degradation
c) habitat pollution
d) charismatic megafauna

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent

Amajor source of energy for your body comes from

Define adaptation. why do organisms adapt? give an example.