Carbon Cycle Quiz

What is the primary reason mass is conserved in chemical reactions?

• Atoms are created and destroyed in equal amounts.

• Mass is destroyed during reactions.

• Mass is created during reactions.

• Atoms are rearranged but not created or destroyed.

Which two processes are responsible for adding carbon to the atmosphere?

• Photosynthesis and combustion

• Respiration and combustion

• Dissolving in oceans and photosynthesis

• Respiration and dissolving in oceans

What is the main product of respiration?

• Glucose

• Carbon dioxide

• Water

• Oxygen

What is the chemical formula for glucose?

• C6H12O6

• CO2

• H2O

• O2

Which process do plants use to remove carbon dioxide from the atmosphere?

• Decomposition

• Respiration

• Combustion

• Photosynthesis

What happens to carbon dioxide when it dissolves in the ocean?

• It evaporates back into the atmosphere.

• It forms carbonic acid and carbonates.

• It is used directly by marine animals.

• It becomes part of the ocean floor.

Which of the following is NOT a carbon sink?

• Atmosphere

• Soil

• Vegetation

• Ocean

What is the role of decomposers in the carbon cycle?

• They store carbon in their bodies.

• They produce oxygen.

• They consume carbon dioxide.

• They break down dead organisms, releasing carbon dioxide.

How do human activities primarily return carbon to the atmosphere?

• By planting trees

• By burning fossil fuels

• Through respiration

• Through photosynthesis

Which process involves carbon moving from green plants to animals?

• Combustion

• Respiration

• Feeding

• Photosynthesis