Which evidence provides support for the nebular theory?
a. scientists have observed the formation of a distant solar system
b. the nebular theory has been proven mathematically
c. astronomers have observed protoplanetary disk around distant newborn stars.
d. none of the above

The best choice is C.  The evidence that support for the nebular theory is that astronomers have observed protoplanetary disk around distant newborn stars. Also, they saw that planets have the right characteristics to form a disk composed mainly of hydrogen around the Sun.

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.