4 A reaction that needs water,
macromolecules are broken down
( biochemistry )

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

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.

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.