Primary source of energy for living-beings
Describe the primary source of energy for living-beings on earth?
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The sun, center of our planetary system and star of the Milky Way galaxy (that is, our galaxy), is the source of the energy which is processed and consumed by living-beings. Intense nuclear reactions in the sun release light and other energetic radiations into the contiguous space. Some of this energy also reaches our planet.
Define cell theory in brief?
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