Which isotope has a relatively short half- life

Regarding most of the narrator’s story, which word best describes the tone?

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.

Which of your fossils are most likely heterotrophs? which of them are autotrophs? how do you know?