The correct answer is C. A decrease in hydropower development.
The Yangtze River is one of the longest rivers by volume in all the world. And it has become the river which flows entirely in the country. What makes this river to have less pollution is the fact that there are some parts that are protected as nature reserves.
Answer:
Arthur Zimmermann was the German foreign secretary during World War I from 1914 to mid-1917. He studied law and spent many years working as a foreign diplomat before becoming foreign secretary. He is best remembered for the Zimmermann Telegram that led to U.S. involvement in World War I.
<em>Hope I helped answer your question:)</em>
Theories about what caused the Classic Maya collapse have ranged from overpopulation to ongoing military conflict between competing city-states to some catastrophic environmental event, such as an intense drought—or some combination of all of those factors.