Biogeochemical Cycles

Front

What is free nitrogen?

Back

Free nitrogen (N2) is nitrogen that is not combined with other elements and is found in the atmosphere as a gas.

Front

What is transpiration?

Back

Transpiration is the process of plants losing water through their leaves.

Front

Where are nitrogen-fixing bacteria primarily found?

Back

Nitrogen-fixing bacteria are primarily found in root nodules of certain plants.

Front

What occurs during nitrogen-fixation?

Back

During nitrogen-fixation, gaseous (free) nitrogen is converted into nitrogen compounds, such as ammonia.

Front

What is the most abundant gas in the atmosphere?

Back

The most abundant gas in the atmosphere is nitrogen.

Front

Define biogeochemical cycles.

Back

Biogeochemical cycles are natural processes that recycle nutrients in various chemical forms from the environment to organisms and back to the environment.

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

Explain the water cycle.

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth, involving processes like evaporation, condensation, and precipitation.

Front

What is the significance of the carbon cycle?

Back

The carbon cycle is significant because it regulates Earth's climate and is essential for life, as carbon is a key component of organic molecules.

Front

How do plants contribute to the nitrogen cycle?

Back

Plants contribute to the nitrogen cycle by absorbing nitrogen compounds from the soil and using them to synthesize proteins.