Correct Answer:
Option A - The theory of evolution by natural selection, first formulated in Darwin's book "the origin of species" in 1859, is the process by which organisms change over time as a result of changes in heritable physical or behavioural traits. Natural selection acts on biodiversity due to which only the most adapted organism live in the environment and the remaining organism die.
A. The theory of evolution by natural selection, first formulated in Darwin's book "the origin of species" in 1859, is the process by which organisms change over time as a result of changes in heritable physical or behavioural traits. Natural selection acts on biodiversity due to which only the most adapted organism live in the environment and the remaining organism die.