Use the Internet, library books or encyclopedia to answer the questions about these endangered species.

### Exercise 2 1. **How do Amur leopards and Snow leopards differ from each other?** Amur leopards live in temperate forests of the Russian Far East, while Snow leopards live in the high mountains of Central Asia. Snow leopards have much thicker, paler fur, a longer tail for balance on rocks, and broader paws that act like snowshoes, which are adaptations to their cold, mountainous habitat. 2. **What are the main threats to Beluga (white whale)?** Main threats include climate change (loss of sea ice), pollution (contaminants like chemicals and heavy metals), ship strikes, noise pollution from industrial activities, and a reduction in food sources due to overfishing and ecosystem changes. 3. **Why are Polar bears considered (to be) marine mammals?** They are classified as marine mammals because they spend most of their life on the sea ice, are excellent swimmers, and depend entirely on the marine ecosystem for their food (mainly seals). 4. **Why are Siberian tigers considered the only tigers capable of surviving in snow?** Siberian tigers have specific adaptations: they are larger to conserve body heat, have a thicker coat of fur, a layer of fat for insulation, and larger paws that help them walk on deep snow. 5. **Do male or female walruses have tusks? How can they use them?** Both male and female walruses have tusks. They use them to haul their heavy bodies out of the water onto the ice, for protection against predators (like polar bears), and for males, to display dominance and compete for mates. ### Exercise 3 *Note: This is a listening exercise. As an AI, I cannot listen to the audio file referenced in your textbook. If you can provide the script or the audio, I will be happy to help you fill in the missing words!* ### Exercise 4 Here are some additional measures you can add to your Mind Map for environmental protection: * **Conserve water:** Fix leaky taps and take shorter showers. * **Reduce energy use:** Turn off lights and electronics when not in use, use LED bulbs. * **Composting:** Turn food waste into natural fertilizer for plants. * **Reduce plastic waste:** Use reusable bags, bottles, and containers instead of single-use plastics. * **Sustainable transport:** Use a bicycle, walk, or take public transportation instead of a car.