It's been proposed that future space stations create "artificial gravity” by rotating around an axis. (The Space Station would have to be much larger than the present Space Station for this to be feasible.)
a. How would this work? Explain
b. Would the artificial gravity be equally effective throughout the space station? If not, where in the
Space Station would the residents want to live and work?

the answer is 3.1 his answer is wrong mines is right

answera compound;

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 =