B=black and b=brown. a bb guinea pig crosses with a bb guinea pig, and four offspring are produced. all of the offspring are black. explain how this could happen

Simple, both guinea pigs have the dominant B traits in them, and the DNA code combines to make the dominant trait the one most present in the offspring.

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.

The answer is c) organisms that are sensitive to changes in temperature would die.