Maria and her classmates generated some questions after a field trip to a copper mine in Arizona. Which ones could be answered through scientific investigation? Check all that apply.

Is mining for copper bad for the environment?
How much copper is extracted from the mine each day?
Is copper the best metal for conducting electricity?
Do those who work at the mine enjoy their jobs?
How much does it cost to operate the dump trucks each year?

Maria and her classmates generated some questions after a field trip to a copper mine in Arizona. Which ones could be answered through scientific investigation?

Is copper the best metal for conducting electricity

Is mining for copper bad for the environment

How much copper is extracted from the mine each day

The above mentioned could be scientific proven as it involves all steps through highlighting aims and objectives, methodology, precautions among others

Explanation:

Scientific investigations entails different ways to be achieved, every scientific investigations must be titled, has a methodology, aims and objective, hypothesis, review of other related literature, conclusion, references before it could be validated after it has been well published.

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.  

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%