In which state was less than 50 billion tons of coal mined in 2005?

I think it is Coal mining becuase it says it on goegle

Since a female is both xx chromosome and the male passes down the x chromosome, than the offspring would be female since a female is xx.

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.