Question

What are SI units why are they neccasary?

Answer 1

Explanation:

The SI system is important in science and technology because it provides a consistent and coherent system of units for all physical quantities, derived from a few base units. This means that you do not need to use any sort of conversion factor between different units

SI units provide a way for scientists around the world to record information about observations in a manner that all scientists around the world will understand

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Answer 2

Answer:

Internationally standardized units are SI units.

They are necessary for measuring the substance.