Take me from the world and I'mjust a body part. If I don't start the game, thenplay will never start. I'm the onlyway to have anything. And yetwith me you have nothing. What am I?

What feature of cell theory is best demonstrated in the image

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

What do nitrifying bacteria convert