Based on the cycle of photosynthesis and cellular respiration, one can say that the ultimate original source of energy for all living things on Earth is Select one: a. carbohydrates. b. water. c. the sun. d. carbon dioxide.
The sun is the most basic source of energy for all living beings. It supports photosynthesis in plants and algae that is the main reaction for producing energy rich compounds like carbohydrates etc. These compounds are utilized by all life on Earth to stay alive.
