LIFE SCIENCE

Detailed explanation-1: -Species can change over time in response to changes in environmental conditions through adaptation by natural selection acting over generations. Traits that support successful survival and reproduction in the new environment become more common.

Detailed explanation-2: -Explain to students that the lizard’s membranes are an example of an adaptation, a body part that changes over time and through many generations, helping a species survive.

Detailed explanation-3: -If the mutation has a deleterious affect on the phenotype of the offspring, the mutation is referred to as a genetic disorder. Alternately, if the mutation has a positive affect on the fitness of the offspring, it is called an adaptation.

Detailed explanation-4: -Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes.