14. Which nitrogenous base isn't found in DNA?

Uracil is a nitrogenous base found in all RNA but not present in DNA.

Explanation:

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Explanation:

Uracil is a base found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine. Uracil the nitrogenous based is not found in DNA.

So, the final answer is Uracil.

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.