carbon and water cycles

Front

What does NOT produce carbon dioxide? Options: Photosynthesis, Burning Fossil Fuels, Animal respiration, Plants decaying

Back

Photosynthesis

Front

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

Back

fossil fuels

Front

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide. Options: Water, Atmosphere, Sun, Air

Back

Atmosphere

Front

In the carbon cycle, producers take in the gas __

Back

carbon dioxide

Front

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

Back

Humans depend on oxygen, plants depend on carbon dioxide

Front

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

Back

True

Front

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

Back

oxygen, carbon dioxide

Front

What process occurs when coal (fossil fuel) is used for energy? Options: Decomposition, Combustion, Pressurization, Respiration

Back

Combustion

Front

The diagram shows the flow of organic molecules through an ecosystem. What two processes are identified by the labels X and Y?

Back

X: Decomposition
Y: Respiration

Front

How do animals get carbon?

Back

By eating plants and or other animals.