Unit 3 - Carbon Cycle Semester Review

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, using carbon dioxide and water to produce glucose and oxygen.

Front

What happens to atmospheric carbon levels if plant populations decrease?

Back

If the plant population decreases, the amount of carbon in the atmosphere would increase due to reduced carbon uptake during photosynthesis.

Front

True or False: Carbon moves from fossil fuels to the atmosphere when the fuels are burned.

Back

True.

Front

In respiration, which gas is consumed and which gas is produced?

Back

In respiration, carbon dioxide is consumed and oxygen is produced.

Front

What process is represented by death and decomposition in the carbon cycle?

Back

Death and decomposition involve the breakdown of dead organic matter, returning carbon to the soil and atmosphere.

Front

Define the carbon cycle.

Back

The carbon cycle is the series of processes by which carbon compounds are interconverted in the environment, involving processes such as photosynthesis, respiration, decomposition, and combustion.

Front

What role do plants play in the carbon cycle?

Back

Plants absorb carbon dioxide from the atmosphere during photosynthesis, helping to regulate atmospheric carbon levels.

Front

What is combustion in the context of the carbon cycle?

Back

Combustion is the process of burning fossil fuels, which releases carbon dioxide into the atmosphere.

Front

Explain the term 'assimilation' in the carbon cycle.

Back

Assimilation is the process by which living organisms incorporate carbon from carbon dioxide into organic compounds.

Front

What is the significance of decomposition in the carbon cycle?

Back

Decomposition recycles nutrients and carbon back into the ecosystem, making them available for new plant growth.