Malaria is caused by?
a). a virus
b). a protist
c). a fungus
d). a mosquito

Me d: which system contains the heart, blood, and blood vessels? a. muscular b. circulatory c. respiratory d. digestive which system contains the pituitary, adrenal, and thyroid glands? a. respiratory b. circulatory c. endocrine d. reproductive

Apregnant women is paining her diet

Christopher came down with the chicken pox after spending time in his child’s day care. what like in the chain of transmission is this scenario