Restless tectonic plates move (shift) between one and 15 cm per

a. year

b. month

c. day

d. minute

The body is protected against harmful flu viruses by

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

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.