In a flight a rocket is subjected to four forces: weight, thrust, lift, and drag. Forces are vector quantities that have both a magnitude and a direction. Imagine that the rocket is about to lift off the launch pad. According to Newton's third law of motion what force is critical to the success of its upward motion?

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

this is a good question! i'll do some research and come back when i have the answer!

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 =