Answer The first practical realisation of the metric system came in 1799, during the French Revolution, when the existing system of measures
Explanation:
The cells of the immune system
Answer:
The mass of an object is a measure of the object's inertial property, or the amount of matter it contains. The weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. The pull of gravity on the earth gives an object a downward acceleration of about 9.8 m/s2.
Hope this helps:)
Simon flexner an american doctor
