Final answer:
The sun is important for life on Earth as it provides energy for photosynthesis and regulates biological processes in organisms.
Step-by-step explanation:
The sun is important for life on Earth because it provides energy for all living organisms through the process of photosynthesis. Plants use the sun's energy to convert carbon dioxide and water into glucose, which serves as a source of food and energy for the plant and other organisms. Additionally, sunlight helps regulate various biological processes in animals, such as metabolism, vitamin D synthesis, and the regulation of sleep cycles.
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