what do you think would happen to the results if the second person infected had a weakened immune system?

Sometimes a person’s immune system does not work properly. This can result from immune deficiencies present at birth; medications that suppress the immune system, like steroids; unnecessary or overzealous immune responses, such as allergies; or immune responses to one’s self, called autoimmunity. One of the amazing aspects of the immune system is that it is compensatory, meaning that when one part is weak or non-functional, typically another part can step in. Think of it like a trip to the grocery store. If you need to go to the store, but your tire is flat, you may go by another method of transportation — another motor vehicle, a bicycle or walking. The substitute may or may not be as efficient, but it still allows you to complete your task. The same is true of the cells and proteins of our immune system; most “jobs” of the immune system can be done by more than one part of the immune system although some parts are better at certain jobs than others.

This same feature that makes the immune system flexible also makes it difficult to study. This is why studies in the lab, and even in animals, still need to be repeated in people before we can be sure the findings apply. However, laboratory and animal studies remain important because they provide us with preliminary information that puts us in the best position to succeed when we complete studies in people.

All of this said, sometimes people still have conditions that alter their ability to respond to infections, so let’s take a look at a few and explore how the immune system works in these unique situations

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

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.