Oxygen-Carbon Cycle

Front

What is the oxygen-carbon cycle?

Back

The circulation of oxygen and carbon dioxide gas in the environment.

Front

What do producers give off during the oxygen-carbon cycle?

Back

Producers give off oxygen and some carbon dioxide.

Front

What do consumers release as waste when they use energy?

Back

Consumers release carbon dioxide as waste.

Front

What did Earth's atmosphere lack millions of years ago?

Back

Earth's atmosphere had no breathable oxygen.

Front

What do plants use to make their own food?

Back

Plants use water, carbon dioxide, and energy from the Sun.

Front

What has happened to the oxygen released by producers over time?

Back

The oxygen released by producers gradually built up in the atmosphere.

Front

What do plants take in and give off?

Back

Plants take in carbon dioxide and give off oxygen.

Front

What do animals take in and give off?

Back

Animals take in oxygen and give off carbon dioxide.

Front

What is a waste product produced by all living things?

Back

Carbon dioxide is a waste product produced by all living things.

Front

What activities release carbon dioxide into the atmosphere?

Back

Activities such as the burning of fossil fuels release carbon dioxide.