Yeasts convert sugars into alcohol and CO2.
Yeast use fermentation (alcoholic fermentation). This produces carbon dioxide, alcohol, and some energy.
ATP
aerobic
Most animals, including humans, use oxygen for respiration. This process involves taking in oxygen from the atmosphere and using it to break down food molecules to produce energy.
Calories don't "produce" energy; calories are a UNIT OF ENERGY.
Computers do not produce energy, they use/consume energy.
Energy is stored as chemical energy. This energy is in chemical bonds
The sun produce light and nuclear energy
Respiration is the process by which organisms burn food to produce energy. The starting material of cellular respiration is the sugar glucose, which has energy stored in its chemical bonds. You can think of glucose as a kind of cellular piece of coal: chock-full of energy, but useless when you want to power a stereo. Just as burning coal produces heat and energy in the form of electricity, the chemical processes of respiration convert the energy in glucose into usable form.
Turbines spin generators that produce electrical energy.
Solar energy
it give kinetic energy