I want to have some GLOBAL WARMING informations.
Please type in ENGLISH, thank you.
- 1 十年前最愛解答
To understand global warming , you have to know what greenhouse effect is.
some gases in the earth's atmosphere can trap heat from the sun and keep the earth warm . this is called greenhouse effect .
carbon dioxide is a kind of greenhouse gas . due to increasing human activities , more fossil fuels are burnt and more carbon dioxide released to the atmosphere . therefore , more heat is trapped . the global temperatures increase and this is called global warming .資料來源： understanding integrated science 1B