Across
- 4. This is where all of the trees, bugs, and animals live.
- 6. Are made up of plant and animal matter.
- 7. The crust and upper mantle of the earth.
- 8. Is a warming of Earth's surface and the air above it.
- 11. Wavelengths longer than those of visible red light but shorter than those of microwaves
- 12. Is the opposite of evaporation.
- 14. The element of atomic number 7
- 16. Is done by logging or burning down trees.
- 19. The emission of energy moving as electric particals or waves
- 21. Relating to a period of milder climate between two glacial periods
- 22. Is the average weather in a place over many years.
- 23. When the sun heats up water in lakes or the ocean and turns it into vapor or steam.
- 25. Consists of all the water on Earth.
- 26. A radio wave with a wavelength longer than a kilometer
- 27. This fuel is considered much cleaner than petrol or diesel
Down
- 1. All the living organisms existing together in a particular area .
- 2. When the ocean consists almost entirely of water and salt
- 3. The process by which plants and other organisms use sunlight to synthesize food
- 5. A substance settled out into the air.
- 9. Is also known as green or clean energy.
- 10. When carbon is attached to some oxygen in a gas called.
- 12. Is also a part of the ocean, air, and even rocks.
- 13. A thick layer of soil that remains frozen throughout the year
- 15. Is the day-to-day conditions of a particular place
- 17. A strange warming of surface ocean waters in the eastern tropical Pacific
- 18. A layer of gases surrounding the earth
- 20. Is produced in the stomachs of cows and sheep.
- 24. A layer of ice covering a wide extent of land.