Which of the following statements best describes the journey westward in the mid-1800s? it was extremely slowgoing, but the trails were easy to cross. it took a long time and included a number of difficult obstacles. it took a short time but included a multitude of challenges. the obstacles were so difficult that few pioneers made the effort.

The correct answer is option B

The statement that describes the journey westward in the mid-1800's is - It took a long time and included a number of difficult obstacles.

The people or travelers experienced several obstacles like-  they included rivers to cross, they had vast mountain ranges, it possessed wild animals, there was threat of various diseases and had lack of basic resources. And eventually these hurdles made the traveling time taking.

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.  

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this