Water and Carbon Cycles

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

• Water

• Atmosphere

• Sun

• Soil

Which one of these DOES NOT release CO2 back into the atmosphere?

• cooking with gas

• planting trees

• burning wood

• riding in a bus

What DOES NOT produce carbon dioxide?

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

Tags

NGSS.MS-LS1-6

How do living organisms return carbon back into the atmosphere in the carbon cycle?

• respiration and photosynthesis

• decomposition and respiration

In the carbon cycle, producers (plants) take in the gas __

• carbon dioxide
• oxygen
• nitrogen
• carbon monoxide

Tags

NGSS.MS-LS1-6

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

• True
• False

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

Which of the following removes carbon from the atmosphere?

• Combustion

• Respiration

• Photosynthesis

• Death

Tags

NGSS.MS-LS1-6

Organisms (dead plant and animal remains) that do not decompose can be buried deep in the ground and over time can become _________?

• water

• nutrients

• air

• fossil fuels

If the plant population decreased, the amount of carbon would _________.

• Stay the same
• Increase
• Decrease

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which is a true statement?

• Humans depend on oxygen, plants depend on carbon dioxide

• Plants produce carbon dioxide

• Humans depend on carbon dioxide, plants depend on oxygen

• Humans don't depend on plants for the air they need

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3