Minor allergic reaction to amoxicillin is it okay to take

How could natural selection best be used to explain the evolution of the white fur of arctic fox

During polarization,potassium has a blank charge,sodium has a blank ch arge ,and calcium has a b l ank. charge

For my health class we were given a bunch of pictures of pregnancy tests for extra credit we have to say if they’re negative or positive. i can’t tell if this is a shadow or if it’s a faint positive