Carbon dioxide/Oxygen Cycle

Front

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

Back

False

Front

What does an "exchange of gases" mean?

Back

It means that humans and plants trade gases back and forth.

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? Options: producer, consumer, composer, decomposer

Back

producer

Front

Which statement is true about the carbon dioxide-oxygen cycle? Options: animals breathe in nitrogen and release oxygen which is used by plants, animals breathe in oxygen and release carbon dioxide which is used by plants, animals breathe in nitrogen and release carbon dioxide which is used by plants, animals breathe in carbon dioxide and release oxygen which is used by plants

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

Why is it necessary to include both plants and animals in a terrarium?

Back

Plants provide oxygen for animals and the animals provide carbon dioxide for the plants.

Front

Which substance is needed by plants to survive and is released into the environment by animals? Options: oxygen, sugar, salt, carbon dioxide

Back

carbon dioxide

Front

If the removal of many plants and trees increases in a forest, what effect could this have on the carbon dioxide and oxygen cycle?

Back

CO2 levels increase

Front

The CO2/O cycle is important to animals because it provides

Back

a gas they take in when breathing