Biogeochemical Cycles

Front

What is a biogeochemical cycle?

Back

A biogeochemical cycle is the movement of elements and compounds through living organisms and the physical environment, involving biological, geological, and chemical processes.

Front

What are the main components of the carbon cycle?

Back

The main components of the carbon cycle include photosynthesis, respiration, decomposition, and combustion.

Front

How do plants contribute to the carbon cycle?

Back

Plants absorb carbon dioxide from the atmosphere during photosynthesis and release oxygen.

Front

What is the role of decomposition in nutrient cycling?

Back

Decomposition breaks down dead organic matter, returning nutrients to the soil and making them available for plants.

Front

What is transpiration?

Back

Transpiration is the process by which water is absorbed by plant roots, moves through plants, and is released as water vapor through leaves.

Front

Why is nitrogen important for living organisms?

Back

Nitrogen is essential for the synthesis of amino acids and proteins, which are vital for growth and development.

Front

What is the difference between organic and inorganic phosphorus?

Back

Organic phosphorus is found in living organisms and their remains, while inorganic phosphorus is found in soil and water, often in the form of phosphate.

Front

How does combustion affect the carbon cycle?

Back

Combustion releases carbon dioxide into the atmosphere, increasing greenhouse gas concentrations and impacting climate change.

Front

What is nitrogen fixation?

Back

Nitrogen fixation is the process by which nitrogen gas from the atmosphere is converted into ammonia or related compounds in the soil, making it available for plants.

Front

Can animals use phosphorus directly from the soil?

Back

No, animals cannot use phosphorus directly; they obtain it by consuming plants or other animals that have absorbed it.