Most fossils occur in layers of rocks? A)sedimentary B)metamorphic C) igneous D) volcanic

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells