Cycling of Matter

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

Combustion is another word for __________.

• Transportation
• Respiration
• Fossil Fuels
• Burning

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

• photosynthesis, air

• carbon, oxygen

• oxygen

• oxygen, carbon dioxide

What process occurs when coal (fossil fuel) is used for energy?

• Decomposition
• Combustion
• Pressurization 
• Respiration 

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.

What are fossil fuels made from?

• Plants and animals that are buried underground for millions of years.

• Dead plants and animals

• Rocks that make up Earth's surface

• Trapped gases underneath Earth's surface

When humans EXHALE, we release __________________.

• Oxygen

• Carbon Dioxide

• Nitrogen

• Water

What is CO₂?

• Carbon Monoxide

• Carbon Trioxide

• Carbon Dioxide

• Oxygen