Respuesta :

He is using filtration technique, I hope this helps! 

Answer:

Filtration

Explanation:

The separation technique used is filtration, which consists of separating solid particles, in this case soil particles, from a liquid (water), making use of a material called a filter or mesh. The technique consists of pouring the mixture to be treated on the mesh that allows the water to pass through but that retains the soil particles.

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