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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please mark it the brainliest!

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.