Carbon Cycle

The "carbon cycle" is the ​ (a)   of ​ (b)   in our ​ (c)  

• movement
• carbon
• environment

Answer explanation

The "carbon cycle" describes how carbon moves in our environment, including the atmosphere.

Which of the following is a human impact on the carbon cycle?

• Increased production of methane from farming

• Burning fossil fuels

• Cutting down trees for buildings

• All of the above

Answer explanation

All of these activities are ways in which people contribute to the carbon cycle.

If a forest fire occurs, where will the carbon in the forest go?

• The atmosphere
• Nowhere

• Nearby rivers

• The soil

Answer explanation

If there is a forest fire, the carbon moves from the forest to the atmosphere directly.

Carbon is an ​ (a)   found in every ​ (b)   thing and is necessary for survival

• element
• living

Answer explanation

Carbon is the name of an element, or material, found in every living thing. It is necessary for survival, we cannot live without it.

Photosynthesis is a ​​ (a)   ​ part of the carbon cycle

• bad
• necessary
• harmful
• destructive

Answer explanation

Photosynthesis is a beneficial and important part of the carbon cycle because it removes carbon from the atmosphere.