Natural selection cannot occur without
A B C D
competition for unlimited resources. gradual warming of Earth. genetic variation in species. asexual reproduction in species.
Question: Natural selection cannot occur without
(A) competition for unlimited resources.
(B) gradual warming of Earth.
(C) genetic variation in species.
(D) asexual reproduction in species.

Answer: (C) genetic variation in species.
Answer: (A) competition for unlimited resources.
Question: Natural selection cannot occur without
(A) competition for unlimited resources.
(B) gradual warming of Earth.
(C) genetic variation in species.
(D) asexual reproduction in species.
Answer: (C) genetic variation in species.