The process by which sediments are moved by the wind or by flowing water.
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F
To turn from a liquid into a solid.
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G
A big group of stars.
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H
An animal that eats plants.
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I
An animal that does not have a backbone or spine.
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J
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K
A piece of stone of any size.
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L
Hot liquid rock that comes out of a volcano.
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M
A solid substance that is natural and inorganic. Rocks are made of this.
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N
Substances that all organisms need in order to grow, reproduce, repair themselves and get energy.
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O
A living thing, like a plant or an animal.
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P
The process that plants use to turn inorganic compounds into organic nutrients; it requires sunlight and water.
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Q
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R
The process that organisms use to produce new organisms.
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S
A rock formed from layers of sediment that are gradually compacted and cemented together.
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T
The process by which water evaporates or is removed from the surface of a plant.
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U
The whole of space and everything in it, including the Earth, the planets and the stars.
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V
The amount of space that an object occupies. It is measure in cubic metres.
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W
Short - term changes in things, like temperature, precipitation and wind.
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X
Gas we breathe to survive.
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Y
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Z
This layer in the atmosphere provides us with important protection from the rays of the sun and certain ultraviolet rays. It is getting thinner and it even has a hole.
