Question

earth is comprised of four systems, or spheres. give one example of how a change in one of these spheres of the earth can affect one or more of the other spheres.

Explanation:

The four spheres of Earth are the atmosphere, hydrosphere, biosphere, and geosphere. Deforestation (biosphere change) can lead to soil erosion (geosphere). Trees hold soil in place with their roots. When trees are cut down, the soil is more easily washed away by rain (hydrosphere - water movement), and also releases more carbon into the atmosphere as the trees no longer absorb carbon dioxide for photosynthesis.

Answer:

Deforestation (biosphere) causes soil erosion (geosphere) and affects the atmosphere as carbon - release increases and the hydrosphere as rain can wash away soil more easily.