Explanation:
Each organism in a population produces more offspring than can survive. This is called overproduction. In order for natural selection to occur, populations must have variation. When the environment changes, nature selects favorable adaptations. Over time, these build up in a population.
Each organism in a population produces more offspring than can survive
which is referred to as overproduction.
Natural selection occurs when populations have variation.In Environmental
changes, nature selects favorable adaptation which builds up in a
population.
Organisms have to compete for limited resources in the ecosystem. When
organisms are more than the required resources then it is called
overproduction.
Natural selection occurs when there are variations as a result of changes
caused by different factors such as environment etc.
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