IV. Assessment Directions: Encircle the letter of the correct answer. I. An endangered species is one that is A. already extinct C. already dangerous B. in danger of extinction D. getting smaller 2. Which shows the greatest threat to polar bears today? A. wildlife hunting C. climate change B. water pollution D. overharvesting 3. Many threatened or endangered species can be saved by a large A reforestation project C. food chain B. coal mine D. food web 4. An adaptation is A. A place where an organism lives. B. A characteristic that improves the organism's ability to survive. C. A stage in an animal's life cycle. D. A characteristic the prevents an organism's ability to survive. 5. Some animals have special adaptations for living in their particular habitat. For example, in a cold habitat, animals may have A. blubber B. gills C. venom D. wings​