When people are cold they use a lot of electricity., They should put on warm clothes., People shouldn't cut trees., Cars produce a lot of mud and gas., Factories produce good products, but they pollute air and water., Chemicals can cause destruction of forests., Our chidren can have dirty planet without water and fresh air., Angry sun can cause great floods.

Environmental PROBLEMS

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?