Actually we use both. However, it isn't clear in what context you would prefer to use the word "food" instead of "energy".
Chemosynthesis.
They should carry out both. Photosynthesis for food production and respiration for energy production
The chemical ATP is used by the body in transferring energy from food down to the cells of your body.
Plants use the energy in sunlight to make food
You would use the term "Instruments createsound energy". Therefore,none of the above.
they use hydrotheral vents(thermal energy or heat energy)
They use photosynthesis to turn sun energy to food energy.
when you eat food your body gets energy, what is the time you use the energy
They use photosynthesis and use light energy and sugars which they can use as food.
You use food for energy which then helps you to move and exercise.
Humans use the chemical energy from food as fuel for the muscles that make us move.
Humans use food for energy.