Certain animal species that are endangered or

threatened have been cloned. Closely related

species have been used to carry the embryos of

the endangered species. This process of increasing

the population size of a species in danger of

becoming extinct is an example of a

(1) natural method to decrease ecosystem stability

(2) natural method of controlling the population

of an endangered species

(3) technological fix to increase habitat destruction

(4) technological fix for the problem of

endangered species