At which time after clear-cutting does the ecosystem exhibit the greatest species richness?.

maritime tropical may be your answer.

"do a testcross with a homozygous recessive plant."

the answer is d p: cell, q: organ, r: organ system, s: tissue

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.