Nature & Universe

4. the loud noise that you hear in the sky during a storm
5. a plant or animal group whose members all have similar general features
6. very cold
7. to save someone from dangerous or unpleasant situation
10. an object that is sent into space to travel round the Earth in order to receive and send Information
12. a continuous period of very hot weather
13. the natural world, including the land, water, plants, animals
14. the type of weather in particular region
15. to treat waste materials so that they can be used again
18. the place or moment at which smth begins to exist
19. to find out the exact place where smth is
20. an animal that is Born from its mother's body not from an egg

1. things that people have dropped on the ground in a public place
2. a small animal that has six legs and wings
3. to take care of smth in order to prevent it from being harmed or destroyed
6. to make a statement about what is likely to happen, often relating to the weather
8. areas away from towns and cities with farms, fields and trees
9. smth that no langer exists
11. very good, impressive
16. in or related to a particular area, the place where you live
17. including or affecting the whole World
21. the weather is warm and pleasant