global warming

what is carbon-dioxide, methane and nitric-oxide

• the green house gases

• earths respectful gases

• radiation

• none of these

what are the 3 rs

• reuse

• recycle

• reduce

• methane

• nitrogen

What is the greenhouse effect?

• warming of the earth due to gases in our atmosphere.
• cooling of the earth due to gases in our atmosphere

Each one of these gases is a greenhouse gas, except which one?

• carbon dioxide

• nitric oxide

• hydrogen dioxide

• methane

how much ratings

• 
• 

the green house gases are carbondioxide, and nitric oxide

• sulfur dioxide

• sulfur trioxide

• methane

• hidrogen oxide

• none of these

what are humans doing to make more carbondioxide

• cutting trees

• using fuel cars

• sneezing

• none of these