What occurs in both solar and lunar total eclipses? i will be awarding brainliest answer.

a. one celestial body passes through the umbra of another.
b. a corona is produced when one celestial body passes in front of another.
c. one celestial body passes through the penumbra of another.
d. they only occur during the full moon phase of the lunar cycle.

which three statements are true about all alloys?

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 =