GLOBAL SYSTEMS

4. All the water on Earth.
5. layer of the atmosphere that burns meteorites
6. A phase of matter which is firm and stable in shape.
11. The action or process of depositing a substance out of a solution.
16. The chemical element with atomic number 6, a non-metal which has two main forms (diamond and graphite) and which also occurs in impure form in coal, charcoal and soot.
17. All life on earth, including man, and all organisms.
18. A gaseous sphere that envelops the Earth.
20. The smallest particle of a chemical element that can exist on its own.

1. A phase of matter which is a substance that flows freely but is of constant volume.
2. A phase of matter which is an air-like fluid substance which expands freely to fill any space available, irrespective of its quantity.
3. The process by which green plants and some other organisms use sunlight to absorb nutrients from carbon dioxide and water.
7. The negative ion in CaCO3
8. The Earth's solid surface, often called crust on the Earth.
9. Crust The top layer of Earth. (2 words: First word 11 letters and second word 5 letters)
10. The chemical element with atomic number 15, a poisonous, combustible non-metal.
12. The motion of warm material that rises, cools off, and sinks again, producing a continuous circulation of material and transfer of heat.
13. An individual animal, plant, or single-celled life form.
14. Liquid which forms the seas, lakes, rivers and rain and is the basis of the fluids of living organisms.
15. The chemical element with atomic number 7, a colourless, odourless unreactive gas that forms about 78 per cent of the earth's atmosphere.
19. An example of a body of water that covers 71% of Earth's surface