Question

why sun is called the ultimate source of energy for all living organism​

Answer 1

Answer:

Because in sun shines there are many vitamins which are healthy for all living organisms.

Example => Vitamin D is important for us we get this by sunshine.

And sun is a natural source of light and energy.

Explanation:

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Answer 2

$\huge\red{Hello Mates}$

your answer:-

The sun is called the ultimate source of energy because it is the source of almost all energies of the earth. Plants convert light energy from the sun into chemical energy (food) by the process of photosynthesis. Animals eat plants and use that same chemical energy for all their activities.