The australopithecus lineage went extinct about:

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.

All other things being equal the size of a population will decrease if

Why do you suppose the structural polysaccharide cellulose does not contain branches?