Carbon Cycle Quiz

What is the process by which plants absorb carbon dioxide from the atmosphere?

• Photosynthesis

• Cellular respiration

• Decomposition

• Transpiration

What type of systems are referred to as carbon sinks?

• islands

• mountains

• peninsulas

• Forests

What can turn a carbon sink into a carbon source?

• Tornado

• Volcanic eruption

• Earthquake

• Forest fire

What is the main anthropogenic activity that releases CO2 into the atmosphere?

• Burning wood for cooking

• Agricultural activities

• Burning fossil fuels for energy

• Industrial waste disposal

How are fossil fuels formed?

• By volcanic activity

• By the process of photosynthesis

• By the decay of modern organisms

• By the compression of ancient organisms over millions of years