because food is the only way to intake energy.Sleeping just rests your body it won't give you energy. Unless you know photosynthisis.....that would be cool
The primary source of energy for living organisms is the sun. Through the process of photosynthesis, plants and other photosynthetic organisms convert sunlight into chemical energy stored in the form of glucose, which is used by all living things as a source of fuel for cellular processes.
the sun
Glucose is an important carbohydrate found in living organisms. It is a primary source of energy for cells and is essential for various biological processes.
The sun.
the sun
C6H12O6 represents the chemical formula for glucose, a simple sugar that is an important source of energy for living organisms.
Source of energy
The original source of energy in the biosphere is sunlight. Plants and other photosynthetic organisms convert sunlight into chemical energy through the process of photosynthesis, which is then used by living organisms as a source of energy.
Sugar. I believe I am not completely sure.
The sun.
Atp
Glucose is a significant energy source for living organisms. It is a part of numerous carbohydrates.