Help me plz Which is a difference between animal populations in primary succession and secondary succession?
A.
Animals can be present during the start of primary succession, but they are never present during the start of secondary succession.
B.
Animals can be present during the start of secondary succession, but they are never present during the start of primary succession.
C.
There is more animal biodiversity after the process of primary succession has been completed.
D.
There is more animal biodiversity after the process of secondary succession has been completed.

Me with these questions if you’re it sure don’t answer

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Which nucleotide component contains nitrogen