The main air pollutants include : particulate matter, Ground-level ozone, Nitrogen dioxide, sulfur dioxide, carbon monoxide and lead.
正确
举一反三
- Which pollutant is currently the subject of urgent research（） A: nitrogen dioxide B: ozone C: lead D: particulate matter
- The synonym of CO2 is .（ ）。 A: hydrogen B: carbon monoxide C: carbon dioxide D: oxygen
- Plants （ ） carbon dioxide from the air and moisture from the soil.
- ( ) is taken in by plants to make food. A: nitrogen B: hydrogen C: oxygen D: carbon dioxide
- The gas with maximum percentage in the atmosphere is ( ). A: nitrogen B: hydrogen C: oxygen D: carbon dioxide
内容
- 0
This main idea of the country A: the formation of sugar B: the role of water in a growing plant C: the functions of carbon dioxide and water D: the synthesis of water with carbon dioxide
- 1
Trees absorb carbon dioxide from the air, which can increase greenhouse gases.
- 2
carbon dioxide
- 3
sulfur dioxide() A: 二氧化硫 B: 二氧化碳
- 4
Carbon dioxide content of normal air is:( ) A: 0.03℅ B: 0.30% C: 23.3% D: 78.3%