Carbon Cycle Questions

Where does the carbon cycle begin?

• Plants
• Dead organisms
• Sunlight
• In the air

Does the carbon cycle sustain life?

• No
• Yes

How does carbon dioxide leave the atmosphere?

• Through transpiration
• Through photosynthesis
• Through factory emission
• Sunlight

What is one way that carbon enters the atmosphere?

• Sunlight
• Factory emissions
• Ocean uptake
• Rain

Do plants support the carbon cycle?

• Yes
• No

What is happening because humans have added too much carbon dioxide into the air?

• Hole in the ozone layer
• Climate change
• Pollution
• Global cooling

When carbon combines with oxygen, what forms?

• Nitrogen
• Argon
• Carbon dioxide
• Sodium hydrogen

Why does too much carbon dioxide in the atmosphere cause climate change?

• It cools down our planet
• It blocks out UV rays
• It traps heat and warms up our planet
• It lets sunlight escape

Is oxygen part of the carbon cycle?

• Yes
• No

How does carbon in a grass plant get into a lion?

• The lion eats the grass
• Carbon from grass doesn't end up in a lion. 
• The carbon ends up in the food the lion eats. 
• The lion breathes in carbon given out by the plant