You arrive to an unconscious male lying on the pavement. as you approach the patient, you note that he has chest rise and fall, but does not respond when you touch him. what is the first and most important thing that you can do for this patient?

Matter and energy move among plants, animals, decomposers, and the environment within an ecosystem. through photosynthesis, plants use sunlight, air, and water to grow and become sources of energy for other living things. what statement best explains this phenomenon or occurrence?