Glucose, or in general, carbohydrates.
The nutrient that supplies energy for almost all living things is glucose. Glucose is a form of sugar that is broken down through cellular respiration to release energy in the form of ATP (adenosine triphosphate). This energy is then used for various biological processes in the cell.
The Sun
Respiration
Chemical processes cycle energy from the sun through living things in a process called photosynthesis. Only plants photosynthesize and they do this to make food for themselves and other organisms. They collect energy from the sun and use it, along with water and other nutrients by converting them to sugars.
Sun is the original source of energy that drives photosynthesis, climate, wind, almost everything on Earth.
Nutrients. There could be a single thing that a living organism survives on that is not a nutrient but I can't think of one right now. The sun is a type of nutrient because it provides some types of nutrients. Anything can be a nutrient so I'd say the only thing the most "primitive" living organisms need is some form of nutrient. Not all living things need oxygen or hydrogen.
Pyruvic acid supplies energy to living sells.
ATP
The Sun
The Sun
The Sun
ATP
ATP
Respiration
Greener way of living involves saving your energy and water, using less gas and making your own cleaning supplies.
Photosynthesis!
Creatine is a result of the metabolism of protein. It is present in living tissue. It supplies the energy for muscle contraction.
Sunlight and, at the Ocean bottom at heat vents, hydrogen sulfide are both use as sources on bio-energy.