Carbon Dioxide

Front

Oxygen is a living element that humans and animals require to live.

Back

False

Front

Why is the CO2 and O2 cycle considered to be a cycle?

Back

There is a continuous exchange of gases.

Front

Which type of organism gets its energy directly from the Sun?

Back

producer

Front

Which statement is true about the carbon dioxide-oxygen cycle?

Back

Animals breathe in oxygen and release carbon dioxide which is used by plants.

Front

If all the trees on Earth were destroyed, what would be the effect on humans?

Back

There would be a lack of oxygen.

Front

Which substance is needed by plants to survive and is released into the environment by animals?

Back

carbon dioxide

Front

What effect could the removal of many plants and trees in a forest have on the carbon dioxide and oxygen cycle?

Back

CO2 levels increase

Front

Why is the CO2 cycle important to animals?

Back

It provides a gas they take in when breathing.

Front

________________ could increase the amount of oxygen in the air.

Back

Planting more trees

Front

Which of the following removes carbon from the atmosphere?

Back

Photosynthesis