Page 2: Carbon Pathways Activity

This page covers Activity A, which has students explore carbon pathways between Earth's major systems.

Key points:

• Students create a carbon path starting and ending in the atmosphere
• Each step is labeled with the corresponding Earth system (atmosphere, hydrosphere, geosphere, biosphere)
• The activity demonstrates how carbon moves between different reservoirs

Definition: Hydrosphere - All of Earth's water, including oceans, lakes, rivers, groundwater, and ice

Definition: Geosphere - The rocky, non-living part of Earth including the crust and mantle

Example: A sample carbon path: Atmospheric CO2 → Oceanic CO2 → Shells/Coral → Limestone → Lithosphere → Volcano → Atmospheric CO2

Highlight: This activity reinforces the cyclical nature of the carbon cycle, showing how carbon atoms can return to their starting point through various processes

Page 6: Animal Impact on Carbon Cycle

This page examines how animals, particularly livestock, affect the carbon cycle through methane production.

Quote: "Bacteria break down undigested materials in an animal's gut, and then they produce methane gas"