Invasion and multiplication of pathogenic microorganisms<span> in the body is called an infection. When we are infected by </span>pathogens<span> we become sick, which means that our bodies stop functioning properly. Infectious agents, such as </span>bacteria<span>, a virus, fungi or protozoa cause communicable diseases.</span>
Evaporation exceeds precipitation
I'm pretty sure it's the cell membrane.
Since mice in general, are nocturnal, I think b. is the answer..
