Si units are the modern form of?

Metric system .

Explanation:

Hello,

The metric system is an internationally straightforward recognized system of measurement, based on the meter, liter, and gram as units of length, capacity, and weight or mass. The system was first proposed by the French both astronomer and mathematician Gabriel Mouton in 1670 and was standardized in Republican France in the 1790's. Nowadays, it is known as SI since it has a widespread use around the world.

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idk what is it? is this a question that you know the answer or u dont

answerlinnaeus;