If there is a water crisis, battles will be fought to obtain water.
This will lead to more wars.
From the water crisis in Somalia and Bosnia, the author sees before hand what would happen later.
The Serbs who besieged Sarajevo quickly discovered a tactic more devastating than direct assault.
Because the author sees water crisis as the weakest point, it would be easier to win
the battle if water-sources are destroyed.
The "blue planet" is two third water. Two-thirds of the earth is made of water.
The aquifers of water-bearing strata consists of permeable rock, sand and gravel.
In the last paragraph, the author speaks of the consumption of water in agriculture. So agriculture is where future water shortages will be most acute.
Especially Yellow River in China and Colorado in the U.S. are excessively dammed and diverted.
The author of the passage does the following except pose a question.
A. Incorrect. The author compares Canada and Mexico in the eighth paragraph.
B. Incorrect. He gives approximations at different places, as in the seventh paragraph.
C. Incorrect. He cites Sir Crispin Tickell in the fourth paragraph.
D. Incorrect. He gives an example of Jordan and Israel in the sixth paragraph.
Symptoms of water crisis are listed in the seventh paragraph.
This can be done by adopting new conservation strategies and irrigation technologies.
A, B & D Incorrect.
E. Incorrect. These are not mentioned in the passage.