Which of the following best describes an elliptical galaxy? interstellar dust and gases forming a smooth circular pattern several billion stars arranged in a smooth flat manner a group of stars forming recognizable patterns in the night sky millions of planets arranged in the shape of a disk with spiraling arms

Several billion stars arranged in a smooth flat manner    

Explanation:

A galaxy can be defined as a large group of stars which are gravitationally  bound. A typical galaxy contains billions of stars and interstellar dust and gases. Galaxies can be classified on the basis of their shape. An elliptical galaxy has billions of stars arranged in a smooth flat featureless manner. In a spiral galaxy, there is dense bulge at the center with spiral arms.

the answer is c.) there is a warm front in region a and a stationary 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.