环保;环保方式;绿色植物;环境污染原因
Q：How to protect the environment?
Planting trees is a good way to protect the environment.
First, trees help people keep healthy physically and mentally. By purifying the polluted air and beatifying the environment, trees can give people fresh air to breathe and large area of greenness to see, so that people's body health can be guaranteed. As a result, people’s sense of happiness will be enhanced.
Second, trees will increase students’ study efficiency. As trees block the noises outside, students will concentrate more on their courses in a relatively quiet environment rather than being distracted. Eventually, students have more satisfying grades.
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