The three principles used by Darwin to support natural selection include: 1) The characteristics of organisms are inherited or passed from parent to offspring, 2) More offspring are produced than are able to survive (resources for survival and reproduction are limited), and

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 description provides the best objective summary of the article in the passage?

What advantages does a pedigree have over a written passage?