Which natural cycle is affected the most by the use of fertilizers? a. oxygen cycle b. water cycle c. carbon cycle d. nitrogen cycle

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

Some of the money that people deposit into a bank eventually becomes a interjection into the economy when the bank