Carbon Cycle

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

• solid
• liquid 
• gas
• plasma

Tags

NGSS.MS-PS1-4

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

• cells
• geosphere
• atmosphere

Tags

NGSS.MS-LS2-3

Earth has a fixed amount of _____.

• trees
• carbon
• carbon dioxide

Tags

NGSS.MS-LS2-3

Carbon enters the living world through the process of _____.

• photosynthesis
• respiration
• combustion
• decomposition

Tags

NGSS.MS-LS1-6

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

• C
• O
• CO₂ 
• C₆H₁₂O₆

Tags

NGSS.MS-PS1-5

The process of burning is called _____.

• decomposition
• combustion
• respiration

Tags

NGSS.MS-PS1-5

In this diagram, how many ways can carbon enter the living world?

• one
• two
• three
• four

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

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 is the an important element for living things.

• Neon
• Hydrogen
• Helium
• Carbon