If you pumped contaminated water from an aquifer, cleaned the water and pumped it back in what would happen? Question 2 options:

The water would be re-contaminated by rock and soil in the aquifer

The water would clean the aquifer

It’s impossible to know what would happen

The water would be clean and stay clean

It’s impossible to know what would happen

Explanation:

If contaminated water is pumped form an aquifer, cleaned and pumped back, it would be impossible to know what would happen unless the source of the contaminant is known.

If the source of the contaminant is known and removed before the water is pumped back into the acquifer, the water would be clean and stay clean provided that all the water was initially pumped off. If the source of the contaminant is not known, it would be difficult to predict what would happen.

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?