Nutrient Cycle Review

Front

What is respiration in the context of the nutrient cycle?

Back

Respiration is the process by which organisms release carbon dioxide (CO2) into the atmosphere as they convert organic molecules into energy.

Front

How does carbon from grass enter a lion's body?

Back

The carbon from grass becomes part of a lion when the lion eats the grass, transferring the carbon through the food chain.

Front

What is runoff in relation to nitrogen fertilizers?

Back

Runoff is the process where excess nitrogen from fertilizers is washed away into local streams, potentially causing pollution.

Front

How do plants obtain nitrogen?

Back

Plants get the nitrogen they need from the soil or water in which they live, often through the uptake of nitrate or ammonium ions.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which plants absorb carbon dioxide (CO2) from the atmosphere and convert it into organic molecules using sunlight.

Front

Define nitrogen fixation.

Back

Nitrogen fixation is the process of converting atmospheric nitrogen (N2) into a form that plants can use, such as ammonia (NH3).

Front

What role do decomposers play in the nutrient cycle?

Back

Decomposers break down dead organic matter, returning nutrients like nitrogen and carbon back to the soil, making them available for plants.

Front

Explain the term 'volatilization' in the context of nitrogen.

Back

Volatilization is the process by which nitrogen in fertilizers is converted to gaseous forms and lost to the atmosphere.

Front

What is the significance of the carbon cycle?

Back

The carbon cycle is crucial for regulating Earth's climate and supporting life by recycling carbon through various processes like photosynthesis and respiration.

Front

How does the nutrient cycle affect ecosystems?

Back

The nutrient cycle maintains ecosystem health by ensuring that essential nutrients are recycled and available for organisms to use.