Answer:
You can choose between the two or just copy the two of them:
- It is used to separate stones and pebbles from the soil at a construction site. This is because stones and pebbles, being larger particles remain on the sieve while the fine soil particles pass through the holes of the sieve.
- Sieves are used at construction sites to separate pebbles and stones from sand. Sieves are also used to separate fine flour particles from the bigger impurities.
Explanation:
Sieving is a simple technique for separating particles of different sizes. A sieve such as used for sifting flour has very small holes. Coarse particles are separated or broken up by grinding against one another and the screen openings.
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