The Carbon Cycle

What is the carbon cycle?

• A cycle that balances the amount of nitrogen in the atmosphere

• A cycle that balances all gases in the atmosphere.

• A cycle that balances the amount of carbon dioxide and oxygen in the atmosphere.

• A cycle that balances global warming.

What process is being shown in the image above?

• Respiration

• Decomposition

• Combustion

• Photosynthesis

Choose two ways that carbon is removed from the atmosphere.

• Decomposition

• Absorption by bodies of water

• Combustion

• Photosynthesis

Desribe the process being shown.

• Dead plants are being broken down by fungi

• Glucose is being broken down using oxygen

• Carbon dioxide gas is being absorbed by bodies of water

• Green plants are converting glucose to carbon dioxide and water

____ is the process of breaking down glucose with the use of oxgen into carbon dioxide and water.

• Photosynthesis

• Combustion

• Emitting gas

• Respiration

Animals and plants carry out this process in the mitochondria of their cells.

• Photosynthesis

• Breathing

• Respiration

• Combustion

Choose TWO processes that release carbon dioxide into the atmosphere/air.

• Photosynthesis

• Burning of fossil fuels/Combustion

• Absorption by bodies of water

• Volcanoes and fires

Choose TWO reasons why the carbon cycle is imporant.

• It is responsible for global warming

• It balances the amount of carbon dioxide and oxygen in the air.

• It keeps the air clean

• It makes carbon available for use by all organisms on earth.

• It provides heat

True or False: The carbon cycle happens naturally.

Look at the diagram carefully. What process is taking place at Letter R?

• Animal respiration

• Plant respiration

• Fungi decomposition

• Bacteria decomposition