Carbon Cycle

Plants use ____________ to make their own food

• Water

• Sunlight

• Carbon dioxide

• All of these

oxygen is a gas produced by _ and used by  _ 

• plants and animals 
• photosynthesis and carbon dioxide 
• animals and plants 
• carbon dioxide and photosynthesis

Which is a true statement?

• Humans depend on oxygen, plants depend on carbon dioxide

• Plants produce carbon dioxide

• Humans depend on carbon dioxide, plants depend on oxygen

• Humans don't depend on plants for the air they need

Which process converts carbon in the form of sugar into carbon dioxide gas?

• Bioremediation
• Photosynthesis
• Respiration
• Transpiration

carbon dioxide is a gas produced  by ________ and used by __________

• plants and animals 
• carbon and photosynthesis
• animals and plants 
• photosynthesis

oxygen is a gas produced by _____ and used by ________

• plants and animals

• photosynthesis and carbon dioxide

• animals and plants

• carbon dioxide and photosynthesis

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

Carbon atoms cannot be created or destroyed

• True

• False

• Not enough information to answer

Which gas do plants release, that humans depend on for survival?

• Water

• Carbon Dioxide

• Oxygen

• Sugar

Which of the following is an example of a decomposer?

• Owl
• Fish
• Tree
• Mushroom