Carbon dioxide consists of carbon and （ ）
A: oxygen
B: emergency
C: upgrade
D: religious
A: oxygen
B: emergency
C: upgrade
D: religious
举一反三
- The synonym of CO2 is .（ ）。 A: hydrogen B: carbon monoxide C: carbon dioxide D: oxygen
- What caused the deposits A: The hydrochloric acid broke the carbon bonds in tile carbon dioxide, B: The magnesium oxide broke the carbon oxygen bonds in the carbon dioxide. C: The burning magnesium broke the carbon oxygen bonds in the carbon dioxide. D: The gas collection method broke the carbon-oxygen bonds in the carbon dioxid
- ( ) 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
- "Greenhouse gases" in Para. 2 refer to ________________. A: oxygen B: hydrogen C: carbon dioxide D: air