Carbohydrates are the nutrients that provides the first source of energy for humans. Nutrients are the nutritious components in foods that an organism utilizes to survive and grow.
ATP
This source of energy is glucose.
Ultimately, sunshine is the energy source for most life.
Sunlight is the primary source of energy for humans and all other living things. Also, glucose is a main source of energy (eating).
The sun is, by far, the main source of energy. All others stand in it's shadow.
It provides basic energy source and life on Earth
Wind
Fiber is made of glucose molecules arranged into a starch(cellulose), so they are not a quick source of energy. Humans have difficulty digesting fiber.
Nutrients and energy.
Hydropower
solar energy
Sun is the source of heat and light energy. It provides energy on earth's surface.
Human cells
the sun
The sun
The Sun.
ATP