On August 27, 2003, Mars reached a distance of 55,758,000 km from the earth, which was the closest distance between the two planets in nearly 60,000 years. Which of the following values would you use to write
this distance in scientific notation to two significant figures?
O 56.0 x 106 km
O 5.6 x 108 km
O 5.6 x 107 km
O 5.5 x 107 km
O 5.57 x 108 km
5.57 x 107 km

i think it is non rem sleep

high-sugar diet and high cholesterol

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 =