Answer:
B. Adult flies have emerged from the shells
Explanation:
A pupa is the life stage of some insects undergoing transformation between immature and mature stages. The pupal stage is found only in insects that undergo a complete metamorphosis, with four life stages: egg, larva, pupa, and imagoa, therefore, an empty pupae means the insect has emerged from the pupae by splitting the pupal case and leaving it empty
A transvaginal ultrasound is where a probe goes up into the vagina/cervix instead of using the ultrasound jelly and wand on the stomach.
O M G i just did that one on Plato
well anyway i think the answer was the the skin because any thing that invades the body is a threat to the immune system.
A lack of Vitamin C may lead to scurvy
