Carbon Cycle

The circulation of the element Carbon among Earth's atmosphere, land, oceans, and organisms is called _____________.

• the Carbon Cycle

• the Oxygen Cycle

• the Carbon dioxide Cycle

• the Water Cycle

TRUE or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.

• True
• False

What does NOT produce carbon dioxide?

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

Carbon can be found in...

• The atmosphere
• Soil
• Fossil fuels
• All of the above

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

Respiration is the process by which animals take in _____ and release _____. 

• photosynthesis, air
• carbon, oxygen
• oxygen
• oxygen, carbon dioxide

The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?

• lower levels of ozone in the atmosphere
• lower levels of nitrogen in the atmosphere
• higher levels of carbon dioxide and other greenhouse gases in the atmosphere
• higher levels of oxygen in the atmosphere

How do animals get carbon?

• By eating plants and or other animals.

• They absorb it from the atmosphere.

• From the ground

• They do not get carbon from anywhere.

When humans EXHALE, we release __________________.

• Oxygen

• Carbon Dioxide

• Nitrogen

• Water

Where can you find carbon?

• Only in Earth's atmosphere

• Inside all water molecules

• Inside the sun

• Inside every living thing on Earth