지구온난화 - 강지완

Global warming is number one issue. The earth is undergoing global warming. and problem like global warming that are already upon us(우리가 이 문제에 직면하고 있다. upon us) and cause more forest death and more global warming. and we're doing that.

So what we do, our choices we make, can lead us towards global health or global sickness. Why do we have global warming?

(지구온난화의 원인은 뭐지?) The light from the sun heats the earth Heat from the Sun is trapped by four gases in our atmosphere. carbon dioxide, water vap...