Answer:
Xerophthalmia is a progressive eye disease caused by vitamin A deficiency. Lack of vitamin A can dry out your tear ducts and eyes. Xerophthalmia can develop into night blindness or more serious damage to your cornea, the outer layer of your eye.
Explanation:
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Answer:
by affecting their behaviour (such as attendance at a screening programme; the food they eat; whether they take prescribed medication), or more directly by affecting a physiological system (such as the immune or cardiovascular systems).
Name calling, aggressive posture/folded arms.
I'm pretty sure the answer is parasite
