Fill in: endangered, habiatas, surface, extinct, damaging, exploration, symbol, turning,

Fill in: endangered, habiatas, surface, extinct, damaging, exploration, symbol, turning, exhaust, poisons
1. The ...... of the red planet is rocky
2. Now people are .......... their attention to mars.
3 We learnt some very interesting facts about space ....
4. ...... fumes pollute the air in big cities.
5. Many animals are in danger of losing their natural
6. Factory waste ....... our lakes and rivers.
7. We should protect ...... species.
8. What is the national ....... of China?
9. Some animals will become ........... in the next few years
10. Bad weathers is ...... the old buildings
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