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
