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Crossword clues

Solve these clues to fill the grid.

Hard piece of stone
2 Across
Study of the natural world through experiments
6 Across
Clear liquid we drink that falls as rain
7 Across
Matter that has been deposited by some natural process
9 Across
A fertilizer that is derived from animal or vegetable matter
11 Across
The layer of soil between the topsoil and bedrock
12 Across
The layer of soil on the surface
13 Across
Frozen water
15 Across
To remove soil or rock
1 Down
Any substance that can be taken in by a green plant and used in organic synthesis
3 Down
Solid homogeneous inorganic substances occurring in nature having a definite chemical composition
4 Down
Solid unweathered rock lying beneath surface deposits of soil
5 Down
Moving air
7 Down
The usually underground organ that lacks buds or leaves or nodes (plural)
8 Down
Condition in which the earth's surface is worn away by the action of water and wind
10 Down
The part of the earth's surface consisting of humus and disintegrated rock
14 Down

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