20. 第二十篇 Why Should We Protect the Environment -朗读音频-美音

PASSAGE 20：Why Should We Protect the Environment?  

It is important to protect the environment because man-made disruptions to ecosystems can cause extinction and because pollution creates dangers for both animals and people.

Many of the dangers to the environment come from practices designed to make human life easier but actually threaten the long-term health and prosperity of humans.