Carbon Cycle Quiz

Which process reduces carbon dioxide into the atmosphere?

• Photosynthesis

• Respiration

• Combustion

• Decomposition

How is carbon transferred from animals to the soil?

• Through combustion

• Through decomposition

• Through photosynthesis

• Through respiration

What is the main source of carbon dioxide in the atmosphere?

• Plants

• Fossil fuels

• Animals

• Microorganisms

How do fossil fuels form?

• Through photosynthesis

• Through millions of years of pressure

• Through combustion

• Through decomposition

What is the role of plants in the carbon cycle?

• They absorb carbon dioxide during photosynthesis

• They release carbon dioxide into the atmosphere

• They store carbon as fat in their cells

• They break down carbon in the soil

How does water enter the atmosphere from the ocean?

• Through sublimation

• Through evaporation

• Through precipitation

• Through infiltration

What is the process by which water falls to the ground?

• Infiltration

• Precipitation

• Evaporation

• Condensation

What is the major agent of weathering and erosion?

• Pressure

• Water

• Heat

• Air

How does lava form igneous rock?

• Through precipitation

• Through cooling and hardening

• Through heat and pressure

• Through evaporation

What causes mechanical and physical weathering of rocks?

• Acidic rain

• Heat and pressure

• Frost wedging

• Chemical changes