Which features do sound waves have that ocean and light waves do not? Choose all that apply.
compression,
rarefaction,
amplitude,
wavelength,
crests,
frequency,
speed

radiation

explanation:

heat is transmitted by radiation

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 =