An overwhelming urge to be thin
The answer could be A.
A bacterial cell is about 0.2-20 um, while a typical eukaryotic cell is about 10-100um, according to many sources of research.
It gives the characteristic trait of the organisms that can be good or bad to the survival of it environment. But to go into depth as each organisms die and the survival of each one reproduce it will come out as a natural selected to the survival of the environment aka Survival of the Fittest. :)
A common cold i believe .
These people may end up eating something else or end up having a diet. They will have to find a new way to cope and get around in life than eating that kind of food that they wont have so they have to find other sources of food to stay alive and well
