Environmental factors can influence natural selection because they can increase or decrease? the number of chromosomes in an individual. the number of chromosomes in a population. the amount of genetic variation in an individual. the amount of genetic variation in a population

Answer is the amount of genetic variation in a population

Natural selection gets impacted by environmental factors. The environmental factors increase or decrease the quantum of genetic variation in a population. Genetic diversity increase due to sudden and permanent change in the gene or DNA. This change is called mutation. Decrease in genetic diversity may occur when a specific allele reduces the chances of individual with that trait to reproduce. Individual with decreased genetic variation often dies before producing offspring through reproduction.  

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d

explanation:

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