How does the arctic tundra follow the law of conservation of mass and the law of conservation of energy

So organisms consume other organisms the food they eat either will be stored for later use or broken down into energy. Whatever is left will become fecal material. Energy is never produced or destroyed it is used or stored. It can be stored as fats, carbohydrates or sugars. When organisms break them down into simpler structures energy is released.

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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.