عمكم مجدل

. The glyptodont fossils and living armadillos that Darwin observed during

• . species vary globally

• species vary locally

• species vary overtime

• all of the above

In addition to observing living organisms, Darwin studied the preserved remains of ancient organisms called.

• adaptations

• homologies

• vestigial structures

• fossils

According to Malthus what would occur if the human population grew unchecked?

• disease, war, or famine

• extinction of humans

• evolution of a new species

• development of new traits in humans

Which of the following would an animal breeder use to increase the number of cows that give the most milk.

• artificial selection

• overproduction

• acquired characteristics.

• genetic isolation

The akiapola’au uses its long top bill to probe for insects in trees. This beak is an example of

• an acquired characteristic

• an adaptation

• A variation.

• fitness

During the process of natural selection, what determines which organism survive and reproduce?

• number of adaptations

• variety of adaptations

• population size

• evolutionary fitness

The study of past and present distribution of organisms is called

• . adaptation.

• evolution

• biogeography.

• fossils

. process by which organisms survive and reproduce

• natural selection

• . homologous structures

• . analogous structures

• analogous structures

body parts similar in structure in different species

• Bind DNA to chemical dyes

• . tracheophytes.

• homologous structures

• synthesizes nucleotide bases

body parts similar in function but not in structure

• analogous structures

• homologous structures

• adaptation

• natural selection