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1. Which of the following is NOT a type of soil?
A. clay B. mud C. sand D. silt
2. What is the texture of sandy soil?
A. sticky B. gritty C. smooth D. rough
3. Why is organic matter (humus) an important part of soil? It _______
A. helps to improve water infiltration
B. can break down organic pollutants
C. is rich in nutrients which is important for fertility
D. converts nitrogen in the air into nitrates used by plants
4. Which type of soil does water flow quickly?
A. bedrock B. clay C. sand D. silt
5. Sand feels _________and is made up of __________rock particles.
A. rough, small B. rough, large C. smooth, large D. sticky, large
6. Clay feels ______________ in texture.
A. rough B. smooth C. sticky D. like sand paper
7. Why is soil considered as an important resource? It______.
A. allows solid place to build homes and buildings
B. allows to grow food
C. helps plants grow
D. all of the above
8. Which type of soil retains the least amount of water to flow it very quickly?
A. clay B. silt C. humus D. sand
9. What part of the topsoil most likely feel rough?
A. clay B. humus C. sand D. silt
10. Why do some plants cannot grow in sandy soil? Because ______.
A. air cannot pass through sandy soil
B. sandy soil has too many nutrients
C. roots cannot easily push through sandy soil
D. sandy soil does not hold/retain enough water
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