You have read about the mistakes made on Easter Island. On Tikopia, another small island, the people acted in other ways. When they realized that the pigs they had imported were damaging the environment, they killed them all. They had to have permission from a chief to fish, which prevented overfishing. They practiced contraception. These all indicate that:. a. they truly practiced sustainability
b. they believed in full resource utilization
c. they felt that everything was a renewable resource
d. they felt that everything was a nonrenewable resource
e. they were concerned with only one year at a time