Read following passages and choose the best answer for each blanketunit D. city following passages and choose the best answer for each blanket WHY DO ANIMALS GO EXTINCT? Different kinds of animals have appeared and disappeared throughout Earth's history. Some animals go extinct (5) climate may become wetter or drier. It may become warmer or cooler. If the animals the climate where they live changes. The cannot change, or adapt, to the new climate, they die. (6) because they cannot compete with other animals for food. Some animals go extine animals go extinc because they are killed by enemies. New kinds of animals are always evolving. Evolvin means that the animals are changing from generation to generation. Small (7) between parents, children, and grandchildren slowly add up over many generations. Eventually, (8) different kind of animal evolves. Sometimes mar of the animals on Earth go extinct at the (9) time Scientists call this a ma extinction. Scientists think there have been at least five mass extinctions in Barth history. The last mass extinction happened about 65 million years ago. This ma extinction killed off the dinosaurs. man Question 5. A. although Question 6. A. All Question 7. A. different Question 8. A. a Question 9. A same B. because B. Any B. difference B. an B. similar C. the C. because of C. Some C. differences C. different D. in spite of D. Much D. differently D. no article D. various |