is a form of pollution in which atmospheric moisture becomes chemically changed from exposure to certain toxic gases.
A. Acid rain
B. Basic rain
C. Point source pollution
D. Non-point source pollution

(science)

Acid rain

Explanation:

Acid rain is generated from the pollution happening in the environment.

- "sack of constantinople, (april 1204). the diversion of the fourth crusade from the holy land to attack, capture, and pillage the byzantine city of constantinople divided and dissipated the efforts of the christians to maintain the war against the muslims. the fourth crusade was corrupted from its purpose early on."

- "the crusades were a series of religious wars undertaken by the latin church. the first crusade arose after a call to arms in 1095 sermons by pope urban ii. the first crusade unleashed a wave of impassioned, pious catholic fury, which was of constantinople, the capital of the christian-controlled byzantine empire."

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