Oxygen & Carbon Cycles

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?

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

What could increase the amount of oxygen in the air? Options: Building more houses, Burning more oil, Paving more streets, Planting more trees

Back

Planting more trees

Front

Plants use _____________ to make their own food during photosynthesis.

Back

water, energy from Sun, CO2

Front

If the Sun stopped shining, why wouldn't plants and animals survive?

Back

Plants use the Sun's energy and CO2 to make glucose, and release O that animals breathe.

Front

Animals use oxygen for _____________.

Back

breathing