Some of the factors would be introduction of non native species, pollution, overgrazing, chemical agents and habitat loss
Answer:
Here, this can be a starting point for you! :) I hope this helps you out, have a nice rest of your day :)
Trench: very deep, elongated cavity bordering a continent or an island arc; it forms when one tectonic plate slides beneath another. Ridge: underwater mountain range that criss-crosses the oceans and is formed by rising magma in a zone where two plates are moving apart.
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1.China
2.Yellow Sea
3.Himalayas
4.Gulf of Thailand
5.Beijing
6. Kazahstan
7. Siberia
8.Yangtze river
9.South China Sea
10.Philippine Sea
11.Sea of Japan (east sea)
This is hard but hopefully these are correct
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The answer is c. 1970.
The Clean Water Act came into force in the decade 1970s. The act is to regulate the discharges of pollutants into the waters and to regulate quality of surface water. The clean water act required industries to reduce or eliminate point source pollution in surface waters.
