Scientific evidence documents the pattern of evolution. the evidence exists in a variety of categories, including direct observation of evolutionary change, the fossil record, homology, and biogeography. sort the following examples into the correct categories.

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?