Meter is called a standard unit. Give reason.

The meter is not called a fundamental unit, except informally by some people. In the International System of units (SI), the meter is one of seven base units. Base units can be defined in terms that do not depend on no units beyond other base units or natural constants (e.g., the speed of light). Using no more than those seven base units, other units can be defined and those are called derived units. No factors or coefficients other than one are used to show how they relate to each other

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one would be wind another would be water density

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;