Across
- 4. a layer protecting the Earth from UV radiation is called the ... layer
- 5. intense long rain causes the rise of river levels and causes a
- 6. a dry area often covered in sand or rocks
- 9. permanently frozen land
- 11. one of the causes of the global warming, caused by trapping CO2 in the atmosphere is called the ... effect
- 12. the process of cutting forests
- 13. a very large mass of frozen water that floats in the sea
Down
- 1. a machine that keeps the air in a building cool is called an AC, an air ...
- 2. a natural formation which is called "lungs of the planet"
- 3. longterm weather conditions in a particular place
- 7. long periods without rain causes...
- 8. gas, oil, coal, which are used to power something, are called (2 words)
- 10. animal species which no longer exist because they died out are