Which statement describes an effect of natural

selection on a species?

(1) It favors the survival of certain members

of the species and results in a change in

the proportion of individuals with highly

adaptive traits.

(2) It provides feedback mechanisms for members

of a species and results in a change in the

proportion of individuals with homeostatic

controls.

(3) It leads to reproduction with other species,

increasing the number of different adaptations.

(4) It increases competition between populations

that occupy different niches, increasing the

chance of extinction of the less-adapted

species.