Can some please help me ? Thank you!

Hey ! I think I can help with this question.

In the diagram you were given the speed which is 5.25m/s and you were also given distance which is 950metres.

So the formula which will be suitable in my own way will be speed=distance/timeSince you weren't given the time,then you can place the numbers in their respectively places which will be 5.25=950/timeThen you will cross multiply which will be 5.25t=950Then 950÷5.25=180.952381 which is approximately 181. then don't forget to add your unit, time is measured in seconds so the answer is going to be 181seconds.This is what I know...I hope this helps youThank you for the question

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 =