Donna shines a flashlight and a laser pointer on a sheet of paper. she holds each device at an equal distance from the paper. how does the light hitting the paper from each device appear different? the light from the flashlight lights up a larger area of the paper. the light from the laser pointer lights up a larger area of the paper. the light from the flashlight magnifies a larger area of the paper. the light from the laser pointer magnifies a larger area of the paper.

The flashlight lights up a larger portion of the paper.

Explanation:

The laser is designed to light up a specific portion of a paper.

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

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 =