Humans have the ability to change the characteristics, or traits, of organisms over time. What is this process called?

I think the answer is Selective breeding and Artificial selection

Explanation:

Its what the document says in StemScopes

Have you ever heard that all dogs are related to wolves? For some dogs, such as huskies and German shepherds, the resemblance to wolves is quite striking. You can see how they may be related. But what about other dogs? Pugs look nothing like wolves. Neither do chihuahuas or toy poodles, yet these dogs are also related of the wolf. So how did we get from wolves to toy poodles? The answer is artificial selection. Humans change specific characteristics of organisms through selective breeding.

Hope this helps :D

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.