Do human body's get all its energy from the sun?

No, the human body does not get all its energy directly from the sun. While sunlight is essential for the synthesis of vitamin D and plays a role in various biological processes, humans primarily obtain energy from food. The body converts macronutrients like carbohydrates, fats, and proteins into energy through metabolic processes. Thus, while the sun indirectly supports life on Earth, our energy comes from the consumption of organic matter.