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5. D. lead to 6. A. community 7. C. to 8. B. lose 9. D. National Park 10. A. Tropical 11. C. mammals 12. D. contribute 13. A. covers 14. D. Site 15. B.explore Fill in the blanks with suitable prepositions. 1. Tram Chim is a large area **with** thousands of colorful birds. 2.This place is famous **for** thousands of colorful birds. 3.Its central part is surrounded by waterways **with** a series of gates, which are used to manage the water level. 4.The threat **to** the earth's biodiversity comes from human activities. 5.The disappearance of some species may cause problems **in** the food chain. Compound nouns: 1.food chain 2.sightseeing 3.global warming 4.national park 5.raw materials 6.water level 7.species 8.nature reserve 9.tourist destination Fill in each blank with a suitable word from the list above: 1.In an ecosystem, the food **chain** illustrates the transfer of energy from one organism to another. 2.As the day drew to a close, we gathered on the beach to watch the breathtaking **sightseeing**. 3.The effects of **global warming** are becoming more evident with rising global temperatures and extreme weather events. 4.Yellowstone **National Park** is known for its geysers, hot springs, and diverse wildlife. 5.The cost of raw **materials** has increased, affecting the overall production expenses. 6.The construction of a new bridge improved the navigation of the **water level** for larger vessels. 7.All living **species** require certain essential nutrients to grow and thrive. 8.The government has established the **nature reserve** to preserve the region's unique biodiversity. 9.Paris is a world-famous tourist **destination**, known for its iconic landmarks such as the Eiffel Tower and Louvre Museum. I hope these answers help! Let me know if you have any other questions or need further assistance!