Which idea inspired darwin’s theory of evolution?
species as a whole have remained unchanged for millions of years.
population changes are driven by competition and sexual selection.
organisms can modify their environment to improve living conditions.
traits acquired during the lifetime of an organism can be passed on.

b.) on edg. (Population changes are driven by competition and sexual selection.)

Explanation:

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igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.