Asignificant drawback to wind power is: a. oil companies discourage it. b. the cost of the turbines requires significant capital investment. c. the novelty of windmill technology raises the risk. d. the turbines obstructing the landscape. e. there are only a few areas on the globe that would benefit.

statement #3 on andre"s list is false.

the answer is 12 as i may remember

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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 =