20 POINTS
which of the following describes newton's second law of motion?
A) Force is equal to mass of an object multiplied by its acceleration (F=m*a)
B) An object at rest stays at rest unless acted upon by an outside force
C) For every action, there is an equal and opposite reaction

A)  Force is equal to mass of an object multiplied by its acceleration (F=m*a)

Explanation:

please give me brainliest

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =