If you get an areola transplant does your nipples get smaller when they’re cold? Because I know when the nipples are pinched, touched, or sensitive to cold air they would get smaller. (Serious question! please don’t report question.)

What link in the chain of transmission is described in the paragraph? sarah has been eating and sleeping poorly. she was just diagnosed with pneumonia. tests showed the illness was caused by streptococcus pneumoniae. in the chain of transmission, sarah is the (blank) , and streptococcus pneumonia is the (blank).