Questions 1-5

                                               The 50-million-year-old fossils of an ancient whale found in the Himalayan foothills

                of Pakistan give strong evidence that modern whales are descended from a four-legged, land-dwelling

                animal.  The fossils consist of part of the skull, some teeth, and the well-preserved middle ear of an

                animal that was 6 to 8 feet long, weighed 350 pounds, had a wolflike  snout, and had two foot-long

                jaws with sharp, triangular teeth.  It is the middle ear which suggests that the ancient whale lived on

                land.  Analysis indicated that the animal had eardrums, which do not work in water and which modern

                whales have only in vestigial form.  Furthermore, the right and left ear bones were not isolated from

                each other.  The separation of these bones in marine whales enables them to detect the direction of

                underwater sounds.

                1. The 50-million-year-old fossils found in Pakistan