Global warming

What is recycling?

• is to use materials again and again to make something new.
• is produce new brand products and sell them.
• is living in the developed world but taking care of the nature.
• is classify garbage in different colors.

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

Carbon is used by plants during which process?

• Respiration
• Transpiration
• Photosynthesis
• Transportation

Human activity is adding additional greenhouse gases to the amount that are in the atmosphere naturally

• True
• False

The greenhouse gas having the greatest role in human-caused global warming is

• methane
• carbon dioxide
• CFCs (chlorofluorocarbons)
• ozone

We need the natural greenhouse effect for Earth to be habitable.

• True
• False

Which 2 greenhouse gases contribute the MOST to global warming of Earth?

• N2O and H2O
• O3 and H2O
• CO2 and CH4

What are the 5 main greenhouse gases?

• CO2, N2O, CH4, H2O, O3
• CO2, NO2, NH4, H2O, O2

The following graph tells us what?

• Sea Levels are decreasing.
• Sea Levels are rising.

Why is the increase of Greenhouse gasses a big issue?

• It causes climate change and increase in the global temerature 
• It can lead to a major increase in Greenhouses 
• It leads to more factories
• It causes a major decrease in people