Green House Gases And Human Involvement

Green House Gases And Human Involvement

Multiple Choice

which gas makes up roughly 21% of the Earth's atmosphere?

• nirotogen

• carbon dioxide

• oxygen

• methane

Multiple Choice

which gas was abundant in the early atmosphere but is now less that 1%

• nirotogen

• carbon dioxide

• oxygen

• methane

Multiple Select

which two of these reduced the amount of carbon dioxide in the atmosphere?

• respiration of new life

• photosynthesis of early algae

• formation of sedimentary rocks

• strong winds from solar flares

Multiple Choice

The average temp of the earth is 20 degrees celcius?

• true

• false

Multiple Choice

Without human beings, there would be no green house effect?

• true

• false

Multiple Choice

carbon dioxide, water vapour and methane are the main green house gases

• true

• false

Multiple Choice

radiation from the sun heats the earth?

• true

• false