Geologic time begins with a very long span called precambrian time. precambrian time ended about 544 million years ago. since then, the basic units of geologic time are, in order from longest to shortest: a) eras - periods - epochs. b) eras - epochs - decades. c) orders - epochs - periods. d) epochs - periods - centuries.

Which statement is not an accurate description of meiosis? a) meiosis produces offspring that are genetically diverse. b) meiosis produces offspring that are identical to the parent. c) in sexual reproduction half of the genetic material comes from the father (sperm) and half of the genetic material comes from the mother (egg). d) meiosis decreases the number of chromosomes by half so that when a sperm fertilizes an egg, the resulting zygote has the correct number of chromosomes.