The pedigree below shows two generations of individuals within a family. The pedigreeshows that a daughter has a genetic trait, even though neither of her parents nor her siblingshave the trait. How can the daughter have the genetic trait if no one else in the family has it?

Which statements explains what the fossil records indicates? check all that apply. a) earth is 4.5 billion years old b) many organisms have become extinct c) mammals have always existed on earth d) mass extinctions have occurred several times on earth e) the amount of water on earth has decreased over time?