What is most likely the reason the author included the information about "boom and bust" periods?

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

Can someone me with this and tell me what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.