Deer, like other animals, do not directly harness energy from the sun through a process like photosynthesis. Instead, they obtain energy indirectly by consuming plants that have utilized sunlight for photosynthesis. The energy stored in plants is then transferred to the deer when they eat them. However, it is difficult to quantify the exact percentage of energy derived from the sun as it varies depending on several factors such as the type and quality of plants available in their diet, the season, and individual deer behavior. Nonetheless, it can be understood that all the energy deer acquire ultimately originates from the sun.
