The carbon cycle involves complex feedback mechanisms and various transfer processes between different Earth systems. Understanding these interactions is crucial for climate change studies.

Definition: Positive feedbacks amplify changes, while negative feedbacks help stabilize systems.

Example: Wildfires represent a positive feedback loop, releasing CO₂ that increases global warming, leading to more fires.

Highlight: Major carbon stores include sediments, rocks, oceans, soil organic matter, and terrestrial plants.

Quote: "Carbon sinks absorb more CO₂ than they emit, while carbon sources release more than they absorb."

These case studies demonstrate practical applications of water and carbon cycle concepts in real-world environments.

Highlight: The River Eden basin in Cumbria features steep slopes and receives approximately 2000mm of annual rainfall.

Example: The Amazon Rainforest, covering 5.5 million km², traditionally acts as a carbon sink but recent studies show concerning changes.

Quote: "Studies in 2021 show Amazon emits more CO₂ than it absorbs, releasing 166 billion tons while drawing in only 139 billion tons."

Vocabulary: A carbon sink is an environment that absorbs more carbon than it releases, though the Amazon's status is changing.

The water cycle consists of various interconnected components including precipitation, evapotranspiration, and streamflow. Water moves through different stores and flows, affecting hydrograph patterns and flood risks.

Definition: A hydrograph shows how water discharge varies over time, with flashy hydrographs indicating rapid response to rainfall and subdued hydrographs showing gradual changes.

Vocabulary: Infiltration refers to water movement from ground to soil, while percolation describes water movement into rocks.

Example: In flashy hydrographs, there's a short lag time and steep rising and falling limbs, leading to higher flood risks.

Highlight: Human activities like deforestation, agriculture, and urbanization significantly increase surface runoff and flood risks.