The ultimate source of most energy in the biosphere is the sun. Through the process of photosynthesis, plants capture solar energy and convert it into chemical energy in the form of glucose. This energy then moves through the food chain as animals consume plants and each other.
Photosynthesis not only provides the energy required for plant growth and survival but also produces oxygen, which is essential for the survival of most living organisms. Since sunlight is abundant and renewable, it serves as a sustainable energy source for life on Earth.
Moreover, the sun’s energy drives weather patterns and ocean currents, which further support diverse ecosystems. Overall, without solar energy, life as we know it would not be possible, making it the foundational energy source in the biosphere.