December 2021 1 71 Report
Read the article again. Answer the questions.
1. Why has the Voronya Cave not been completely explored?
2. Why is more known about the caves in Europe, the USA and Australia than those in other parts of the world?
3. For what two reasons is the deep ocean difficult for people to explore?
4. How much of the ocean floor remains unexplored?
5. Why is the Amazon rainforest so interesting for biologists?
6. What's special about the animals and plants that exist in deserts?​
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