乖乖黑宝宝
Bio-degration is a crucial topic in 21th century as our enviroment is at the edge of crumbling. this might be the result of over-emphasising on the growth of economy, as trees are cut down for agriculture and industry, and chances of flooding and acid rains have increased dramatically. however, something we didnt notice is that this in turn harms our economy as firstly,heavy industries such as manufacturing are not able to conduct as the resources are drained. Another reason is because that bio-degration accelerates the opportunities of potential illnesses of people, which further hamper the development of economy. in conclusion, bio-degration has affected severely our economy as it restricts the economic activities that humans may carry out in the future.
麦当当5188
Forests are very important to humans .They give us shade .They provide home for birds and animals .They heip to make the air clean . .Nowadays many forests have been cut down by humans. As a result ,the water and the earth run away , the floods and droughts may often happan.It brings us lots of harm .So we should plant trees to protect our environment.Everyone shuold make a contribution to protecting our environment.
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