It's the Sun. I'm studying this right now, it says:
'Nearly all energy comes from the sun. Some of the solar radiation received by the Earth is reflected back to space by the atmosphere, clouds, and the Earth's surface. The rest is absorbed by the atmosphere and Earth and is changed into heat energy.'
The major contribution in heating the troposphere comes from the sun's radiation. The sun warms the ground by radiation, which in turn warms the air heating the troposphere.
The sun is the most useful cause for the heating of the troposphere
The Equator receives the most heat energy
no
Mars is the closest planet to the sun, and receives the most energy.
The layer in which the Earth receives the most energy is the photosphere
The area around the Equator receives the most direct sunlight, thus absorbs the most heat.
The area around the Equator receives the most direct sunlight, thus absorbs the most heat.
The area around the Equator receives the most direct sunlight, thus absorbs the most heat.
Plants
either conduction or convection
Heat energy is the most wasted form of energy.