Carbon Cycle QzL

What is the carbon cycle?

• A process that involves the movement of carbon among the atmosphere, oceans, soil, and living organisms.

• A cycle that only involves the movement of water in the environment.

• A process that describes the nitrogen movement in the ecosystem.

• A cycle that only occurs in the ocean.

Which of the following processes removes carbon dioxide from the atmosphere?

• Photosynthesis

• Respiration

• Combustion

• Erosion

Approximately how many gigatonnes of carbon are cycled through the living world each year?

• 100 gigatonnes

• 166 gigatonnes

• 200 gigatonnes

• 250 gigatonnes

What are carbon sinks?

• Sources of carbon emissions

• Stores where carbon is locked up

• Machines that capture carbon

• Plants that absorb carbon

Which of the following is NOT considered a carbon sink?

• Fossil fuels

• Carbonate rocks

• The air

• Plastic materials

What process describes the movement of carbon between living things and the environment?

• Photosynthesis

• Carbon cycle

• Respiration

• Nitrogen cycle

What do green plants and algae remove from the atmosphere for photosynthesis?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What do plants and algae use carbon from carbon dioxide to make?

• Vitamins and minerals

• Carbohydrates, proteins, and fats

• Water and oxygen

• Chlorophyll and sunlight

What makes up the biomass of plants and algae?

• Water and sunlight

• Minerals and vitamins

• Carbohydrates, proteins, and fats

• Oxygen and nitrogen

How is carbon passed on through food chains?

• Through photosynthesis

• Through water cycles

• Through animals including primary, secondary, and tertiary consumers

• Through soil absorption