Soils (Grade 9)
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Soils
1.

Select the letter from the soil profile diagram that best matches each statement.
A-horizon
R-horizon
B-horizon
O-horizon
C-horizon
Rock fragments
Subsoil
Humus
Bedrock
Topsoil
2.
What is the chief threat to soil?
- erosion
- pests
- destructive plant life
- decay
3.
Soils formed at high latitudes and high elevations that have good drainage but no distinct horizons are classified as .
- desert soils
- temperate soils
- tropical soils
- polar soils
4.
is any one of various types of soil that can support a forest, grassland, or prairie.
- Desert soil
- Temperate soil
- Tropical soil
- Polar soil
5.
When a soil is impermeable, it
- allows water to flow freely through it.
- has no water in it at all.
- does not allow water to pass through it.
- has large pore spaces.
6.
Identify and discuss three factors that influence soil formation.
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