Aplanet has a period of revolution about the sun equal to tand a mean distance from the sun equal to r. t varies directly as
oa. r
o
o
o
o

answer:

what the heckam i looking at sir. this isn't even a question

it is b

explanation:

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 =