Soil can best be described as the
a. layer of bedrock four layers beneath the earth's surface.
b. sandy bottom of the ocean's floor.
c. loose covering of weathered rocks and decaying organic matter.
d. third layer beneath the earth's surface.

elctricity and magnet is conversion to it

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 =