Determine the independent variable for the following experiment conducted:
a
bees were observed spending hours flying around the paper carriers when they wear
bright yellow "high visibility" vests, but do fly around when the paper carriers do not
wear bright vests.

scientific laws are the result of testing theories and proving them to be facts.

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 =

prndulum needs thread, weight clock to time swings