Biology, 29.09.2019 15:20 datstepparoddoe27

To create a simulation of 20,000 sheep grazing in an isolated valley, a scientist needs to determine the average amount of grass eaten per day by an actual sheep. which of the following is the best course of action for establishing this parameter?

a. divide the total amount of grass eaten by all sheep in the valley by 20,000.
b. determine the average daily grass consumption for 20 randomly selected sheep.
c. choose a random value to use as the daily amount of grass eaten by one sheep.
d. measure the amount of grass eaten per day by a single sheep.

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Answer from: stdntlogin3206

The answer is B.

Determine the average daily grass consumption for 20 randomly selected sheep

(Apex)

Answer from: 166386

The correct answer is option B. "Determine the average daily grass consumption for 20 randomly selected sheep".

Explanation:

One common approach to study a population with a very large number of individuals is to randomly select a sample and perform the study on it. This approach has the advantage that any individual could be selected, which makes more feasible that the sample is representative of the population. In this case, to know the average amount of grass eaten per day by an actual sheep to make a simulation of 20,000 sheep, it is feasible to determine the average daily grass consumption for 20 randomly selected sheep. The 20 sheep must be studied determining the average amount of grass eaten and the variability among the population.

Answer from: Quest

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.

Answer from: Quest

the answer is :

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