Corn Growth Group A (kg fertilizer per Acre) / Acre TitleCorn Yield (Bushels Per Acre)Group B (kg fertilizer Per Acre) / Acre TitleCorn Yield (Bushels Per Acre) 2 / A1180 / B115 4 / A2220 / B215 6 / A3240 / B316 8 / A4300 / B416 10 / A550 / B516 12 / A600 / B616 At what point did the corn yield begin to decline as the amount of fertilizer increased? A)6 kg B)8 kg C)10 kg D)12 kg

yup its correct its: c) b b

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 =