Problem 3
How would you respond to someone who tells you that: a. he or she does not believe in biological evolution because it is "just a theory"? b. we should not worry about air pollution because natural selection will enable humans to develop lungs that can detoxify pollutants?
Problem 4
Describe the major differences between the ecological niches of humans and cockroaches. Are these two forms of life in competition? If so, how do they manage to coexist?
Problem 5
How would you experimentally determine whether an organism is a keystone species?
Problem 6
Is the human species a keystone species? Explain. If humans were to become extinct, what are two species that might also become extinct and two species whose populations might grow?
Problem 7
Explain how you would respond to someone who says that because extinction is a natural process, we should not worry about the loss of biodiversity when species become prematurely extinct as a result of our activities.
Problem 9
Congratulations! You are in charge of the future evolution of life on the earth. What are the three most important things you will do?
