ECONOMICS (CBSE/UGC NET)

ECONOMICS

SCARCITY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What percent of Earth’s freshwater is available for humans to use?
A
3
B
less than 1
C
97
D
10
Explanation: 

Detailed explanation-1: -Although water covers almost 70 percent of the earth, just 2.5 percent of it is fresh. The rest is ocean-based and saline. Complete answer: Only 0.006% of water is fit for human consumption from the total water available.

Detailed explanation-2: -2.5% of the earth’s fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth’s surface to be extracted at an affordable cost. 0.5% of the earth’s water is available fresh water.

Detailed explanation-3: -This is so because rest of the water is locked in glaciers, or is not fit for human use or is not accessible . Most of the water is in seas which is salty .

Detailed explanation-4: -The total volume of water on Earth is estimated at 1.386 billion km³ (333 million cubic miles), with 97.5% being salt water and 2.5% being fresh water.

There is 1 question to complete.