Light travels at a speed of 3.0 times 10 to the 8th power m/s. if it takes light from the sun 5.0 times 10 to the 2nd power to read earth, what is the distance between earth and the sun?

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 =

you can cut your hand off if your not