Upon examining samples of water and mud from a nearby river, you come across an unidentified organism. The organism is unicellular and autotrophic. In addition, you can identify a membrane-bound nucleus in the cells. To what kingdom does it belong?

A protist

Explanation:

In the given question, the characteristic of an unidentified organism are given which are:

1. The organism is unicellular and autotrophic which means that it is a producer and belongs to a plant like organism.

2. The membrane bound nucleus means that the organism is an eukaryote.

The organism is thus an unicellular, autotrophic and an eukaryote could be a species of algae which is considered a protist. The protists are the organisms which shows characteristic of the ukaryotes but are not considered true plants and animals.

Thus, a protist is correct answer.

"a.) well–developed vascular system."

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.