Biodiversity is important to maintain stability in an ecosystem. in order to maintain species numbers over time, which two processes must be equivalent?

a) speciation and extinction
b) mutation and crossing over
eliminate
c) emigration and immigration
d) sexual and asexual reproduction

explanation:

plz give me the characteristics.

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

the endomembrane system i think