Cycling Essential Elements

Biogeochemical cycles describe how essential elements like carbon, nitrogen, and water move through the environment. These cycles connect living and non-living parts of the planet.

The Carbon Cycle

Carbon circulates through the atmosphere, living things, oceans, and rocks. Plants remove carbon dioxide during photosynthesis, and animals release it through respiration.

The Nitrogen Cycle

Nitrogen gas in the atmosphere is made usable for plants by bacteria in the soil. Animals get nitrogen by eating plants, and decomposers recycle it back into the environment.

The Water Cycle

Water moves through the environment via evaporation, condensation, precipitation, and runoff. This cycle powers weather and supports all living things.

Why It Matters

Disruptions to these cycles, like excess carbon from burning fossil fuels, can lead to climate change and pollution.

Key Points

• Cycles keep nutrients moving and available.
• Human activities can disrupt these cycles, with global impacts.