Question

according to darwins theory of evolution, what is the reason for the appearance of new species? a. variation and natural selection. b. the use and disuse of body parts. c. the transmission of acquired characteristics. d. mutations that are specific to one generation.

Explanation:

Charles Darwin's theory of evolution states that the development of new species comes from heritable variation among organisms, with natural selection favoring traits that improve survival and reproduction, leading to species adaptation and divergence over time. Options B and C are associated with Lamarckian evolution, which is not Darwin's framework, and option D is incorrect as mutations must be heritable across generations to drive speciation.

Answer:

A. variation and natural selection.