Lesson 9 Review Exercise 1. Sharks kill about a dozen people a year worldwide. This small number hardly justifies the
the media has heaped on these denizens of the deep.
2. Compare the annual number of fatal shark attacks with the hundreds of millions of humans who
enter the world's oceans. The chances of being killed by a shark are
3. The shark first appeared in oceans one hundred million years ago. It has ruled its watery
as the ocean's top predator ever since.
4. The first sharks evolved very quickly. They have survived almost unchanged from their
beginnings,
5. Sharks attack merely because they are hungry. While humans may not be ready to
the shark, they should realize there is no malevolence behind their attacks.
6. One of the most famous shark movies was directed by Steven Spielberg. The movie was given aln)
title, Jaws, based on the shark's killer appetite.
7. Jaws and other Hollywood movies continue to make people terrified of great whites. These
horror movies may be entertaining, but they do not accurately depict sharks.
8. There are about 350 different shark species. They comprise an extremely
group, from the six-inch dwarf shark to the fifty-foot whale shark.
creatures bear
9. Unlike other fish species, sharks do not lay eggs. These
from five to ten pups at a time.
10. Sharks have an incredible array of sensory equipment to help them hunt. This, together with their
rows of teeth, make them
killing machines.
11. Injured fish create disturbances in the water with their movements. A row of
sensors on each side of a shark's body detects this irregular motion.
and move
OSSI - MAY BE DUPLICATED
12. A great white shark's teeth are three inches long. They are
in a sawing motion when a shark grips its prey.
fin is
13. Movies always depict an approaching shark in the same way. Its
seen slicing through the water.
14. This fin is prized as a delicacy. It is used to make shark-fin soup, a favorite of
in some Asian countries.
15. Despite the unnecessary fear of sharks, swimmers around the world are not deterred from entering
the ocean. The
heat of summer makes almost any body of water inviting.