Which of the following takes place in the combustion chamber of a gas turbine engine? a. a glow plug is used to add enough heat to the chamber for combustion to occur. b. gaseous combustion products are cooled to a desired temperature. c. fuel oil is mixed with a proper portion of compressed air. d. fuel oil is stored with sufficient pressure.

Fuel oil is mixed with a proper portion of compressed air

Explanation:

A gas turbine has three main part, which are

The combustion chamber is responsible for mixing fuel with a proper portion of compressed air.

The air compressor supplies air in sufficient quantity to satisfy the requirements of the combustion chamber

The power turbine produces the power to drive the air compressor.

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 =