Take a handful of soil from a nearby garden and mix it in a clear glass partially filled with water. Stir the mixture and leave it undisturbed. What do the different layers obtained after the mixture has settled down prove? 
A. Soil is made up of different types of components
B. Soil makes a muddy solution
C. The garden is polluted
D. Soil contains micro-organisms

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Answer: Option A
: A

The different layers observed is due to the fact that soil is made up of different types of materials all of which have different sizes and weight. The lighter materials float on top and the heavier particles settle at the bottom.

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