Under which of these conditions is natural selection most likely to occur?
A) When a population is very small
B) When a species has competition
C) When a population has unlimited resources
D) When a species contains few mutations
Natural selection occurs in any situation in which more individuals are born than can survive, there is natural heritable variation, and there is variable fitness among individuals.
Competition is an important factor in natural selection because species need these specific traits to survive in their environment and pass the traits on to future generations.
