Two of the types of ultraviolet light, uva and uvb, are both components of sunlight. their wavelengths range from 320 to 400 nm for uva and from 290 to 320 nm for uvb. compare the energy of microwaves, uva, and uvb. rank from greatest to least energy per photon. to rank items as equivalent, overlap them.

uvb > uva > microwaves

Explanation:

The energy of an electromagnetic wave is

Where

h is the Planck's constant

c is the speed of light and

is the frequency

So we can understand that the energy is inversely proportional to the wavelength

The wavelengths are

1.microwaves - 1 mm - 1m

2.uva - 320 - 400 nm

3.uvb - 290 - 320 nm

So with the smallest wavelength the uvb has the greatest energy

and the microwave has least amount of energy with the largest wavelength range

so the answer is uvb > uva > microwaves

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 =