What can you learn from observing and comparing specific physical traits of different birds

If you observe the beak of the bird, this gives you an idea of its diet and what it eats. Some birds have different feet/legs depending on where they live.

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.