Which compound does NOT contain carbon atoms?

• carbon dioxide

• ammonium

• calcium carbonate

• methane

Tags

NGSS.MS-PS1-1

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

Tags

NGSS.HS-ESS2-6

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

Tags

NGSS.HS-LS2-5

What does not produce carbon dioxide?

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

Tags

NGSS.HS-LS2-5

How do living organisms return carbon to the atmosphere in the carbon cycle?

• respiration and photosynthesis
•  decomposition and respiration

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

In the carbon cycle, producers take in the gas __

• carbon dioxide
• oxygen
• nitrogen
• carbon monoxide

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

How does the carbon in grass become part of a lion?

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

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-5

All of the carbon in existence is continually recycled in the carbon cycle

• True
• False

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

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

• water
• nutrients
• air
• fossil fuels

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1