Across
- 7. the illegal hunting of animals
- 9. the continuous absence of rain, thus causing the land to dry up
- 10. untamed animals (in their natural habitat)
- 12. a group of small islands or an area of sea in which there are many small islands
- 13. tips places where unwanted garbage is dumped
- 14. a long piece of land that sticks out from a larger area of land into the sea or into a lake
- 17. cap a thick layer of ice that permanently covers an area of land
- 20. a narrow area of sea that connects two larger areas of sea
- 21. warming an increase in the temperature of the Earth's atmosphere, which is due to the greenhouse effect
- 23. species a species of plant or animal that are in danger of becoming extinct
- 25. a mountain with a large, flat top
- 26. a wall built across a river that stops the river's flow and collects the water, especially to make a reservoir that provides water for an area
Down
- 1. something that pollute
- 2. a large flat area of land that is high above sea level
- 3. contamination or toxic bi-products from factories
- 4. an area under the earth's surface where there is a large amount of oil; a region rich in petroleum deposits
- 5. generally referring in packaging, it means something that can be decomposed by bacteria or other organisms
- 6. the process of a liquid heating up and turning into a gas or vapor
- 8. fuels fuel formed naturally over many years from the remains of animals, such as coal, oil, and natural gas
- 11. an area of water next to the coast, often protected from the sea by a thick wall, where ships and boats can shelter
- 15. the natural organisms and flora and fauna that constitute and sustain a particular area
- 16. waste matter such as water or human urine or solid waste
- 18. the rise and fall of the sea that happens twice every day
- 19. chain a series of organisms interrelated in their feeding habits, the smallest being fed upon by a larger one, which in turn feeds a still larger one, etc
- 22. something that is dangerous and likely to cause damage
- 24. a circular movement in which each circle is above, below, or wider than the one before