Geography, 06.01.2020 19:31 merrymary3000

What percentage of earth's water is fresh water? which of the following contrasts between confined and unconfined aquifers is correct?

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Answer from: victoria6929

Question 1. The percentage is 3%.

Question 2. Only confined aquifers can produce artesian wells.

Explanation:

The remaining 97% of water is saline and ocean-based, thus, not adequate for consumption. And with from that small 3%, only about 1% is accessible to us, because the rest is located in glaciers and snowfields.

Regarding the second question, for an artesian well to form, a confined aquifer must exist. A confined aquifer stores groundwater under positive pressure, caused by layers of impermeable rocks. Any well drilled into the confined aquifer is called an artesian well.

Answer from: liyahheadhigh

Ans to first question: 3 percent of the water is fresh

Ans to second question: Only confined aquifers can produce artisan wells

Explanation:

The earth is largely covered by water, upto 70 percent, and only about 3 percent of the entire water is fresh, which can be used for agricultural purposes or for other domestic uses. Only 1 percent of this fresh water portion is easily reached by us while the remaining portion are found in snowfields and glaciers.

The remaining water portion are deemed saline.

Artesian well are wells with its water being under pressure and can be said to flow to the surface naturally without being pumped. Only confined aquifers can produce artisan wells

Answer from: Quest

the answer to this question is give me a better question

Answer from: Quest

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.

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