Biogeochemical Cycles

Front

What is the carbon-oxygen cycle?

Back

The carbon-oxygen cycle is a biogeochemical cycle that describes the movement of carbon and oxygen through the atmosphere, biosphere, and geosphere, primarily involving processes like photosynthesis and respiration.

Front

Who are the primary producers in the carbon-oxygen cycle?

Back

Producers, such as plants and algae, generate oxygen and utilize carbon dioxide during photosynthesis.

Front

What is nitrogen fixation?

Back

Nitrogen fixation is the process by which nitrogen gas (N2) is converted into ammonia (NH3) or related compounds in soil, making nitrogen available for plants.

Front

What organisms are responsible for nitrogen fixation?

Back

Bacteria, particularly those in the soil and in symbiotic relationships with plants, are responsible for nitrogen fixation.

Front

What do plants produce during photosynthesis?

Back

Plants produce oxygen and glucose (sugar) during photosynthesis.

Front

What is the driving force of the water cycle?

Back

The sun is the driving force of the water cycle, providing the energy needed for evaporation and transpiration.

Front

What is denitrification?

Back

Denitrification is the process by which nitrates (NO3) are converted back into nitrogen gas (N2), returning nitrogen to the atmosphere.

Front

What role do decomposers play in biogeochemical cycles?

Back

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

Front

What is the significance of the phosphorus cycle?

Back

The phosphorus cycle is important for the growth of plants and animals, as phosphorus is a key component of DNA, RNA, and ATP.

Front

How does human activity impact the nitrogen cycle?

Back

Human activities, such as the use of fertilizers, can lead to excess nitrogen in ecosystems, causing problems like algal blooms and water pollution.