Which statement from the article best supports the idea that the Raptorex may not be an ancestor of the T. rex?A.Sereno believes that the Raptorex was a predator.B.…Drawings of what the Raptorex might have looked like show that there were differences between its appearance and that of the massive T. rex.C.It may have run down prey with its strong legs, killed with its powerful jaws, and clutched its victims with its two-fingered "hands."D.The newly found fossil looks a lot like T. rex fossils.SUBMITExtras

Which question is not answered by the article?A.Why do some scientists think the Raptorex is an ancestor of the T. rex?B.Where does dinosaur expert John R. Horner work?C.Where were the Raptorex fossil bones found?D.When were the first T. rex fossils found?SUBMITExtras

Which of these is an opinion?A.The Raptorex is thought to be about 100 times smaller than the T. rex.B.The Raptorex remains were discovered in northeastern China.C.The Raptorex was a very exciting discovery.D.The Raptorex weighed only about 150 pounds.SUBMITExtras

Scientists have discovered several fossils ranging from 2 to 9 million years old that they believe to be ancestors of a present-day crustacean species. Other than differences in overall size, the fossils appear to be almost structurally identical to the living species. Which of the statements is the MOST reasonable explanation for this observation?Select one:a.The fossils found are not as old as scientists believe them to be.b.The fossils and present‑day crustacean species are an example of convergent evolution.c.Stasis is occurring in this crustacean species.d.Structural features cannot be accurately identified in fossils.

Read this passage:Proof Found in Australia Links Humans to DinosaursThe Australian Society for the Study of Subcutaneous Cultures (ASSSC) today released information about the discovery of a previously unknown species of human that could provide more insight to when humans first walked the earth. A complete skeleton found on the Coast Plains, near Melbourne, has anthropologists excited about the possibility of adding another link to the chain of human history. Scientist Peter L. Reilly describes the find: "This mammal, which we have named Homo jurassicus parkus, appears to share several similarities with both modern humans and Jurassic-era dinosaurs. The skull shape, for instance, measures only 1/15th of a centimeter larger than the common Homo sapiens skull, and the metatarsal bones of the feet share a distinctive pattern with those identified from fossils belonging to Compsognathus, a genus of small, bipedal, carnivorous dinosaurs that are believed to have lived over 150 million years ago." Researchers have been flocking to the Canady site in hopes of finding more proof that dinosaurs and humans share a deeper connection than previously thought.What makes the passage sound believable?A.It uses scientific-sounding data.B.It is written in short sentences.C.It includes an extended title.D.It refers to a real country.SUBMITarrow_backPREVIOUS

The reader can tell from the article that __________.A.Scientists probably found other bones outside of China from a much older Raptorex.B.Scientists probably hope that they will be unable to find any more Raptorex bones.C.Dinosaur bones found in China are not as old as bones found in other parts of the world.D.Fossilized bones are used by scientists to try to tell what life was like centuries ago.SUBMITExtras