Marsupials, such as kangaroos, koalas, and wombats, are mammals that care for their newborn young in a pouch. All
marsupials that are found in Australia are thought to have evolved from a single species that migrated to the island and the
adapted to the various niches. What does this example illustrate?
O behavioral adaptation
O adaptive radiation
O geographic isolation
O population explosion

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms