Carbon Dioxide Oxygen Cycle

Humans breathe oxygen and exhale carbon dioxide. What does exhale mean?

• breathe in

• breathe out

• hold your breath

What gas do animals and people take in?

• oxygen

• carbon dioxide

• water

• energy

What gas do people and animals release?

• oxygen

• water

• energy

• carbon dioxide

If all the trees on Earth were destroyed, what would be the effect on humans?

• there would be a lack of food

• there would be a lack of oxygen

• there would be a lack of fresh water

• there would be a lack of carbon dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

NGSS.MS-ESS3-4

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Label the parts of the Carbon Dioxide and Oxygen cycle:

a

b

c

d

fossil fuel

decay

photosynthesis

cellular respiration

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which diagram correctly represents the carbon dioxide-oxygen cycle?

• 
• 
• 
• 

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Label the steps of the carbon cycle in the correct location.

a

b

c

d

e

f

Fossilization

Respiration

Photosynthesis

Decomposition

Light Energy

Combustion

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Carbon dioxide and oxygen are important resources

in ecosystems and are

• recycled through the activity of living and

  nonliving systems

• stored in the animals of the ecosystem

• lost due to the activities of decomposers

• released by the process of photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of these fluxes REMOVES carbon from the atmosphere?

• Precipitation

• Photosynthesis

• Respiration

• Combustion

Tags

NGSS.MS-LS1-6

Click on the main process that removes CO2 from the atmosphere through a biotic factor.

Tags

NGSS.MS-LS1-6