Which statement best summarizes the evolutionary history of the area shown? a) the area was once an ocean and was replaced by taiga and coniferous forest. b) the area was once covered by an ocean and was replaced by temperate deciduous forest. c) the area was once a temperate deciduous forest and was replaced by a freshwater lake. eliminate d) the area was once a freshwater lake, but it was replaced by the expansion of an ocean.

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.