The main source of energy used in an automatic watch is kinetic energy, which the watch's mechanism absorbs through the movements of the wrist.
the sun is the main source of energy of the earth the sun is the main source of energy of the earth the sun is the main source of energy of the earth
sun is the main source of energy.
Petroleum is the main source of energy for transportation.
Sunlight is the main energy source for life on earth.
The main source for plants is the light
The main source of light is the sun
The main source of energy and heat is the sun.
carbohydrates
The main source of energy in Romania are the thermoelectric units (with coal or methane).
no
Steam was the main source of energy during the industrial revolution.
The main source of light is the sun