一棵树上有一只鸟\昆虫
树能吸收二氧化碳 释放氧气 防止水土流失
参考词:take in carbon dioxide吸收二氧化碳 oxygen 氧气 insect昆虫 stop water and soil from going away desert
悬赏10分, 晚上的不要,自己写!
Now the situation of the environment is very serious,especially the trees.Trees can take in carbon dioxide and release oxygen.They also can stop water and soil from going away desert.But the trees are cut down by people.It's harmful to our environment and if the situation become more and more serious,there will be only a bird or an insect in a tree.So we must pay much attention to protecting the environment.And we should plant more trees every year.
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