Question

the primary source of energy is ______________​

Answer 1

Answer:

Primary sources can be used directly, as they appear in the natural environment: coal, oil, natural gas and wood, nuclear fuels (uranium), the sun, the wind, tides, mountain lakes, the rivers (from which hydroelectric energy can be obtained) and the Earth heat that supplies geothermal energy.

Answer 2

Answer:

Sun

Explanation:

• The principal source is one that we can use for the majority of our tasks. If only this source is left, we will be able to meet all of our energy needs.
• The Sun is the main source of power since the Earth's rays were captured by particles on their way to the surface and utilized later.
• The sun provides all of the energy on our planet in the form of radiant energy. When these rays reach the earth's surface, they collide with molecules.
• Many of the energy is absorbed by such molecules. As a result, their energy decreases, and the radiations are unable to return to outer space.