Which is a requirement for natural selection to occur? heritable variations for some traitsthe ability of an organism to improve a trait during its lifetimeequal probability of survival for all offspringfewer offspring than the environment can support?

Answer;

heritable variations for some traits

Explanation;

-Natural selection is the process by which the organisms in a population that are best adapted to the environment increase in frequency relative to less well-adapted forms, over a number of generations.

Four general conditions necessary for natural selection to occur are:

-More organisms are born than can survive.

-Organisms vary in their characteristics, even within a species.

-Variation is inherited.

-Differences in reproduction and survival are due to variation among organisms.

If all four of these conditions occur, which they commonly do in both natural and human-influenced ecological systems, then natural selection will occur.

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