Which two of the following best describe why Earth has four different seasons?
d

The large ground finch obtains food by cracking seeds. what is its short, strong beak an example? a) tendency toward perfection b) adaptation of a species over time c) selective use and disuse of an organ over time d) scarcity of recourses

Which would be the most useful source of evidence to support mcneill's contention?

Is there any solid scientific evidence that humans have been cloned?