Which is an autonomic body function? squinting in the sunlight salivating at the thought of a hamburger raising your hand in class bending over to pick up a book you dropped

Squinting in the sunlight is an autonomic body function.

Plants take energy from the sunlight with the of chlorophyll so the plant starts the food chain. then an herbivore eats the plant and gets its energy.then a carnivore or a human eats the herbivore and gets its energy. : )