Why are plants considered an important source of food and energy for animal and human life?

Plants have always been one of the key links in the food chain. Life on the planet is impossible without them. And it’s not just oxygen. All animals are divided into herbivores and carnivores. Carnivores then eat herbivores. It turns out that without plants, all vegetarian animals would die. Hence, carnivores could not exist either. All food chains are based on plant foods. In addition to the fact that plants support life throughout the planet, they also provide people with useful trace elements.