The answer is B. The reason why is because natural selection causes changes in a populations over many generations, and in this case the change that is being made is the that the population is becoming immune to a disease.
Electron;neutron
Because the neutron has no charge with mass.
the electron has a negative charge but no mass, because it is in the electron cloud.
I believe clockwise and counterclockwise but I might have them mixed up
If the alcohol concentration in PEA agar was increased, it would inhibit both Gram - and Gram + bacteria by breaking down membrane absorbency barrier, tolerating influx of substances that are generally blocked and leakage of cellular potassium. High alcohol concentrations would lead to disruption or halting of DNA synthesis in both Gram + and Gram - bacteria
I'm not sure of the options listed but: clients typically are obese and clients refrain from purging behaviors.
