Trees absorb carbon dioxide from the air, which can increase greenhouse gases.
举一反三
- the gases which are responsible for causing the greenhouse effect, e.g. carbon dioxide
- It can be inferred that carbon dioxide and methane are largely responsible for the increased concentration of greenhouse gases.
- "Greenhouse gases" in Para. 2 refer to ________________. A: oxygen B: hydrogen C: carbon dioxide D: air
- 9) It (inevitably) will increase the emission of carbon dioxide and so hasten the buildup of greenhouse gases in the atmosphere. A: unavoidably B: certainly C: accidentally
- Carbon dioxide ______ from burning fuels is the most common of the so-called greenhouse gases. A: producing B: having been produced C: to be produced D: produced