Which hypothesis is testable?
plants that are grown by using brand a fertilizer taste best.
plants that have flowers look prettier than plants that do not have flowers.
plants will eventually die off if global warming trends continue.
plants make more sugar on sunny days than on cloudy days

Explanation:The correct answer is Plants make more sugar on sunny days than on cloudy days. That's because the first two involve personal taste since flavor of something and something being pretty is subjective so you can't test it. The global warming part is untestable because we can't create global warming just to test whether the plants will survive.

answer; (phospholipid);

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.