East china is perfectly suited for why is this important?

East China is perfectly suited for agriculture. It is important because out of the total land area of China, less than 13% is cultivable.

Explanation:

East China is where most of China's cultivable land is situated. Out of the total land area of China, only 10% of the land is arable. This becomes important because China has lately been battling with forces that are causing rapid desertification of the cultivable land in the country.

Air pollution: “combustion results in gases such as nitrogen oxides, nitrogen dioxide and particulates. the main causes of air pollution include transport, domestic combustion and industrial processes. pollutants from these sources can cause problems in the immediate vicinity and a distance away.”