Unit 2 Carbon Cycle

Carbon enters the living world through the process of _____.

• photosynthesis
• respiration
• combustion
• decomposition

Tags

NGSS.MS-LS1-6

Earth has a fixed amount of _____.

• trees
• carbon
• carbon dioxide

In the nonliving environment, carbon exists as a gas in _____.

• cells
• geosphere
• atmosphere

1. Oxygen exists in the atmosphere as which state of matter?

• solid
• liquid 
• gas
• plasma

In the atmosphere, carbon attaches to oxygen to form _____.

• C
• O
• CO₂ 
• C₆H₁₂O₆

Tags

NGSS.HS-ESS2-6

Burning fossil fuel has which effect in the carbon cycle?

• It removes carbon dioxide from the atmosphere.
• It puts carbon dioxide under the ground.
• It adds carbon dioxide to the atmosphere.
• It has no effect in the carbon cycle.

Tags

NGSS.MS-ESS2-1

Which process takes carbon dioxide out of the atmosphere?

• respiration
• combustion
• decomposition
• photosynthesis

Tags

NGSS.MS-LS1-6

What does NOT produce carbon dioxide?

• Photosynthesis
• Burning Fossil Fuels
• Animal respiration
• Plants decaying

Tags

NGSS.MS-LS1-6

TRUE or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.

• True
• False

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS2-1

Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

Tags

NGSS.HS-ESS2-6