What is the main difference between primary and secondary
ecological succession?

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.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

(amoeba sisters video recap: pedigrees and need