Do not follow within feet of a fire truck answering an alarm or an ambulance when the red lights are flashing.

500 feet

You must yield the right-of-way to any fire engine, ambulance, or other emergency vehicle flashing red lights. Drive to the right edge of the road and stay at least 500 feet behind any moving fire truck or ambulance. Do not go nearer to them nor stop in the intersection.

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation: