Biogeochemical Cycles

Front

What is the process by which dead matter is broken down into simpler substances by detritivores?

Back

Decomposition

Front

What is the most abundant element in Earth's atmosphere?

Back

Nitrogen

Front

In order to be considered organic, a compound must contain which element?

Back

Carbon

Front

What is the chemical formula for nitrate?

Back

NO₃⁻

Front

What happens to the pH of the ocean when the carbon dioxide content increases?

Back

The pH decreases.

Front

What are biogeochemical cycles?

Back

Natural processes that recycle nutrients in various chemical forms from the non-living environment to living organisms and back.

Front

Name the four main biogeochemical cycles.

Back

Carbon, Nitrogen, Phosphorus, and Water cycles.

Front

What is the role of photosynthesis in the carbon cycle?

Back

Photosynthesis converts carbon dioxide into organic compounds, primarily glucose, using sunlight.

Front

What is nitrogen fixation?

Back

The process of converting atmospheric nitrogen (N₂) into ammonia (NH₃) or related compounds in soil.

Front

What is the significance of decomposers in ecosystems?

Back

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