Understanding Evolution and Natural Selection

What does the theory of evolution suggest about the origin of all living organisms?

• They were created independently.

• They evolved from complex life forms.

• They have always existed in their current form.

• They evolved from simple life forms over three billion years ago.

According to Darwin's theory, what determines which individuals survive and reproduce?

• The size of the population

• Their ability to adapt to the environment

• The amount of food available

• Random chance

How did the industrial revolution affect the population of peppered moths?

• It had no effect on the moth population.

• It caused both varieties to decrease in number.

• It led to an increase in the dark-colored variety.

• It caused the pale variety to become more common.

What role do fossil records play in supporting the theory of evolution?

• They only show changes in plant life.

• They disprove the theory of natural selection.

• They provide evidence of gradual changes in organisms over time.

• They show that organisms have always been the same.

What did Darwin's travels contribute to his theory of evolution?

• They allowed him to examine fossils and live organisms.

• They led him to reject the idea of natural selection.

• They provided no new insights.

• They helped him discover new species.