Which would least likely be a cause of natural selection? adaptation evolution overpopulation variation

The most appropriate answer would be overpopulation.

Natural selection refers to the natural phenomenon by which organisms which are better adapted to the environment tend to survive and reproduce comparatively at better rates.

The natural selection mainly depends upon changing environments and genetic variation in a population.  

Organisms with better variation adapt to the changing environment and survive and reproduce easily.

Over generations, natural selection leads to the change in allele frequency of the population and thus, results in the evolution.

yes? sounds right, but you didn’t ask a question.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

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