A catastrophic event that causes many different species to disappear in a short period of time is known as a

A. macroevolution.
B. punctuated equilibrium.
C. mass extinction.
D. background extinction.

What is the difference between self-pollination and cross-pollination? question 2 options: self-pollination leads to the creation of a fruit. cross-pollination does not. during cross-pollination, ovules are carried from one plant to another plant.. during self-pollination the ovules stay on the same plant. during cross-pollination, ovules are carried from one plant to another plant.. during self-pollination the ovules stay on the same plant. during cross-pollination the pollen grains are carried from one plant to another plant. during self-pollination the pollen and ovules are from the same plant. during cross-pollination, the pollen grains travel from the stigma to the anthers. during self-pollination, the pollen grains travel from the anthers to the stigma.

Which of the following typically characterizes a tropical rainforests

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?