Carbon Cycle Quiz

Which process releases carbon dioxide into the atmosphere?

• respiration

• evaporation

• combustion

• photosynthesis

What is the primary source of carbon dioxide emissions?

• Deforestation

• Industrial waste

• Volcanic eruptions

• Burning of fossil fuels

What is the process by which plants convert carbon dioxide into oxygen?

• photosynthesis

• respiration

• transpiration

• combustion

What is the main function of photosynthesis in the carbon cycle?

• To convert glucose into carbon dioxide and release oxygen.

• To convert oxygen into carbon dioxide and release glucose.

• To convert water into carbon dioxide and release glucose.

• To convert carbon dioxide into glucose and release oxygen.

Which process involves the breakdown of organic matter and releases carbon dioxide?

• combustion

• photosynthesis

• respiration

• fermentation

What is the opposite process of photosynthesis?

• combustion

• fermentation

• oxidation

• cellular respiration

What are the two main components of fossil fuels?

• carbon and hydrogen

• iron and magnesium

• sulfur and phosphorus

• oxygen and nitrogen

How do fossil fuels contribute to carbon dioxide emissions?

• Through the combustion process

• Through nuclear fusion.

• Through evaporation.

• Through photosynthesis.

What is the process by which living organisms release carbon dioxide?

• Respiration

• Fermentation

• Photosynthesis

• Evaporation

What happens to carbon dioxide during decomposition?

• Stored in the ground.

• Converted into oxygen.

• Absorbed by plants.

• Released into the atmosphere