Final answer:
Photosynthesis exemplifies an interaction between Earth's systems, where plants in the biosphere convert solar energy into chemical energy, affecting atmospheric composition by decreasing carbon dioxide and increasing oxygen.
Step-by-step explanation:
One of the interactions between the four major Earth systems is the process of photosynthesis, which occurs in the biosphere and involves the transfer of matter and energy. Through photosynthesis, plants convert sunlight (solar energy) into chemical energy stored in glucose, a process that directly influences the atmosphere by removing carbon dioxide (a greenhouse gas) and releasing oxygen.
This interaction showcases how living systems, such as plants, interact with their environment, particularly the atmosphere, to facilitate the movement of matter (carbon dioxide and oxygen) and energy. The oxygen released is then used by animals, including humans, for respiration, further highlighting the interconnectedness of Earth's systems.