William is conducting an experiment to see whether objects float or sink in water depending on their density. He makes certain that each object he tests is the same shape and volume. He also uses the same amount of water in each trial. Which of these are constants in William's experiment?

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.

3. is true i think i should be right

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It is accessory digestive organ