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

• carbon dioxide

• water vapor

• hydrogen dioxide

• methane

Oceans are important to our environment and atmosphere because... (Choose all that apply)

• They absorb heat and carbon dioxide.

• They hold 97% of the world's water

• They generate 50% of the oxygen we breathe?

• They create opportunities for family outings and activities.

Trees are so important to our environment because they absorb (sink) which greenhouse gas?

• methane

• carbon dioxide

• water vapor

• oxygen

Choose all of the leading contributors of carbon dioxide that are contributing to global warming.

• forest fires

• human breathing (respiration)

• car exhaust

• factory pollution

In which of these areas would you be breathing in a lot of methane gas? (more than one)

• A farm with livestock

• The beach.

• A mall.

• A landfill.

Greenhouse gases are important to our planet's survival because...

• They create a natural cooling effect that keeps us from burning up.

• They fuel the cars we drive.

• They create oxygen which we need to breathe.

• They keep our earth warm so we can sustain life.

Why are too many greenhouse gases bad for the environment?

• They cause trees to die.

• They release heat and will be the cause of the next ice age.

• They trap heat in our atmosphere causing the planet to warm up.

• They are fossil fuels which pollute our environment.

Cloud cover is an example of which greenhouse gas?

• water vapor

• methane

• carbon dioxide

• flouride

True or False: The greenhouse effect is always bad for our environment.

• True

• False

Oil, gasoline and coal are all examples of this type of fuel.

• natural gases

• fossil fuels

• alternative fuels

• bio-fuels