Evolution is often described as "the theme that ties together all aspects of biology." This is because the process of evolution

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.

Which step is not included in the step approach to calculating the greatest common divisor?

24. how are vaccines used to keep people healthy?