The hardness of water is a measurement of how acidic it is.

select the best answer from the choices provided

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f

It is true the lower the pH level the more acidic it will be.

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.