It goes on one line then goes back from the 3 lamps Which of the following equipment is needed to create a parallel circuit
with 4 battery cells, 4 bulbs and a switch. Explain which equipment is
needed and draw the circuit diagram showing an open switch,
batuer holders with​

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 =

god i hope this !