4. What are the functions of leaves? (Select all that apply.) release oxygen

perform photosynthesis

absorb nutrients

absorb carbon dioxide

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.

List five ways we are indebted to phytoplankton

What materials must dams have to produce electricity, and what must occur?