We know like charges repel each other and unlike charges attract each other. Had there been a single charge in the universe can't we define a charge?
Anything is this universe is defined relative to every other thing. Hence, something called a charge cannot show its behavior until there is some other thing to pull or push it.
We can intake minerals, we have proteins synthesized in our body, so we can have metabolic processes to synthesize our own food.
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We want to get an absolute definition of mass and charge.
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