GIY helps carbon dioxide (CO2) emissions.
A: reduce
B: produce
C: increase
D: improve
A: reduce
B: produce
C: increase
D: improve
举一反三
- What has kept temperatures from rising at an even higher rate A: The absorption of carbon dioxide by natural factors. B: Human effort to reduce carbon dioxide emissions. C: Drastically reduced emissions of greenhouse gases. D: A 10% decrease in the average weight of polar bears.
- What will the newly-launched observation satellite do? A: It will record carbon dioxide emissions and absorption worldwide. B: It will identify carbon dioxide emission sources with higher efficiency. C: It will monitor carbon dioxide levels in Earth’s atmosphere. D: All of the above.
- The synonym of CO2 is .（ ）。 A: hydrogen B: carbon monoxide C: carbon dioxide D: oxygen
- ______ of agricultural practices is a recognized method of carbon sequestration as soil can act as an effective carbon sink offsetting as much as 20% of 2010 carbon dioxide emissions annually.
- Geothermal energy brings air emissions including( ). A: carbon dioxide B: all the options C: hydrogen sulfide D: methane