**what is the use of a skimmer ?**
chapter:waste water Story
class:7
subject -science
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A skimmer is a device that collects and removes oil from the surface of the water. Skimmers can be towed, self-propelled, moored in river currents, or even used from shore. Many types of skimmers are available for use, depending on the kind of oil spilled and the weather conditions. Weir skimmers work like a dam
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hi
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even i am 7th but we do not have any chapter like this, so sorry
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