What is the cycling of nutrients between the ground and living organisms? When nutrients from the ground are taken by living organism and returned when those organisms die and decompose.

1. When fertilizer is added to the soil by humans.

2. When planted deplete the soil of all its nutrients and can no longer grow there.

3. When limited numbers of living organisms are available to weather rock and contribute organic matter.

answer; polycythemia is the correct answer;

straight or amphibians are homeothermic to thermal

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.