Question 1 of 10 A team of engineers is designing a new rover to explore the surface of Mars.
Which statement describes the clearest criterion for the solution?
A. It must generate data and images that inspire the public.
O B. It must be capable of sending high-resolution photos back to
Earth.
C. It cannot stop operating during prolonged dust storms.
D. It cannot cost more than $150 million to build and send to Mars.

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 =

at right angles to each other