AP BIOLOGY

Detailed explanation-1: -Changing environmental conditions influence which organisms survive and reproduce, which, in turn, can lead to evolutionary changes in populations.

Detailed explanation-2: -So, the correct answer is ‘All modern species have arisen from previous forms, and continue to evolve’

Detailed explanation-3: -Environmental conditions such as rising temperatures can affect both the way selection acts on a trait and the expression of genes controlling it. If the environmental effect strengthens selection or increases the genetic variance, then the rates of evolution should be accelerated.

Detailed explanation-4: -The theory of evolution is based on the idea that all species? are related and gradually change over time. Evolution relies on there being genetic variation? in a population which affects the physical characteristics (phenotype) of an organism.