The graphs below show the population size and food production as a function of time for two different countries. Based on the graphs, which prediction will most likely happen? A Country A will always produce more food per person than Country B. B The birth rate in Country A will be higher than that in Country B. C Neither Country A nor Country B will survive without food imports from other countries. D The population of Country A will survive longer than that of Country B without the need for food imports.

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 =

0 = 0.40 / 0 = 0

= 0.20 = 9.80 ⁄2 =?

=0 , = = 0.20 =0.50 0 0.40 ⁄

=0−122 =0−12(9.80 ⁄2)(0.50)2 =1.2