A ball is thrown horizontally with a velocity of 12 m/s. How long will it take for the ball to hit the ground if it is released
3.5 m from the ground?

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 =

a. carbon dioxide, i took the test and got it right.