Answer:
Your body technically gets all of its energy from the sun.
Explanation:
The sun gives off light energy that plants need to perform photosynthesis so they can survive.
Photosynthesis: CO₂ + H₂O + light => O₂ + C₆H₁₂O₆
Plants need the sugar (C₆H₁₂O₆) as food to make energy through cellular respiration.
Primary consumers eat plants and breathe in oxygen to perform cellular respiration to live.
Cellular Respiration: O₂ + C₆H₁₂O₆ => CO₂ + H₂O + ATP
Primary consumers need the sugar from their food, plants (which need the sun to survive), to make ATP energy to use.
Secondary consumers eat animals and breathe in oxygen to perform cellular respiration in order to make energy. The animals which they eat must eat plants to survive, and the plants need the sun to survive.
Humans can be primary consumers (eat plants) or secondary, tertiary, etc consumers (eat animals). In order to get energy, the body must perform cellular respiration, which requires food. The food comes from either plants or animals that eat plants. Plants need energy from the sun to live long enough to be eaten and continue the food chain for human consumption.
