The Carbon Cycle

What is a greenhouse gas? Pick ALL answers that are true.

• A gas that traps heat in our atmosphere.

• A gas that reflects heat out of our atmosphere.

• Oxygen (O₂)

• Carbon Dioxide (CO₂)

• A gas that causes climate change.

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

• True
• False

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

Which of the following is an example of a decomposer?

• Owl
• Fish
• Tree
• Mushroom

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

• water
• nutrients
• air
• fossil fuels

Combustion is another word for __________.

• Transportation
• Respiration
• Fossil Fuels
• Burning

What is the carbon cycle?

• It is a biochemical cycle where carbon is being put back into the atmosphere.

• It is something that you breathe out of your body.

• It is a cycle that doesn't put carbon back into the atmosphere.

• It involves the biochemical cycle and it involves transpiration.

How does carbon affect the climate

• it causes global warming

• decreases global warming

Which of these does not add CO2 to the atmosphere

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

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

• respiration and decomposition
• respiration and photosynthesis
• death
• burning