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Rocks and Soil

Across
The hardest material known
These are formed by chemical reactions when rocks cool
A combination of igneous and sedimentary
Otherwise known as the "rock sphere"
Rock formed from lava
Down
Includes all the land areas on earth
Soil comes from ------- which comes from rocks
The type of rock with layers
This has many living things in it, especially in farmland
It caused a huge flood in Washington State
This is where you get oxygen, includes clouds, storms and smog
The whole world is covered with these