A student wants to determine whether a certain variable affects the rate at which crickets chirp. She counts the number of times different groups of crickets chirp per
minute. She records her data in the table below.

Number of crickets
Amount of food
Size of enclosure
Temperature

Which two groups of crickets can the students use as part of a good experimental
design?

47

explanation:

ok

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.

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.  

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above