Carbon Cycle Quiz-mod

How does the human body return carbon to the atmosphere in the carbon cycle?

• Photosynthesis

• Cellular respiration

If a forest fire occurs, what will happen to the carbon in the forest?

• It will go into the soil

• It will go into the atmosphere

• It will be destroyed

Humans burn fossil fuels and wood, releasing carbon dioxide into the atmosphere. This carbon dioxide is then absorbed by trees for photosynthesis. These processes are contributory to which chemical cycle?

• The carbon cycle

• The water cycle

Which of the following is an example of human impact on the carbon cycle?

• The increased production of methane gases from cattle farms

• The burning of fossil fuels

• The cutting down of trees for lumber

• Driving automobiles

• All of the above

What kind of organism takes out the most carbon from the atmosphere?

• Plants

• Bacteria

• Animals

Plants use ____________ to make their own food

• Water

• Sunlight

• Carbon dioxide

• All of these

Why is burning fossil fuels harmful?

• They can get extremely hot

• it increases the amount of carbon dioxode/greenhouse gases in the air

• this would destroy fossils

Which gas do plants release, that humans depend on for survival?

• Water

• Carbon Dioxide

• Oxygen

The process of plants turning carbon dioxide and water into oxygen and sugar is called

• Respiration

• Photosynthesis

• Combustion

Why does cutting down trees increase global warming?

• trees soak up carbon dioxide

• trees provide shade which counteracts global warming

• trees absorbs the sun's energy without radiating back into the atmosphere