If the resistance force is 40 newtons and the effort force is 20 newtons, what is the mechanical advantage? 1 2 3 4

false

explanation:

boats, things on boats luggage are way more heavy then water.

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 =