Laboratory aprons or coats should be worn when working with

There are both psychological and functional reasons for scientists wearing a lab coat as a uniform scrub. It is important that they keep from damaging or staining their own clothing. Just as many chefs wear an apron to protect their clothes, scientists who are working with and around chemicals that can be harmful or that stain usually wear something to keep from anything happening to their clothes.

4

there is no stairs in bungalow

explanation:

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