Of the following human roundworms where the adults live in the intestines, which one is& directly infectious with no delay
a Enterobius vermicularis & (the pinworm) & & & &
b Ascaris lumbricoides
c Necator americanus
d Trichuris trichicura
If the label of a disinfectant says to use a dilution of 1 standard US measuring cup per
gallon of water, using 2 cups/gallon will be twice as effective