i think c. is the best answer , we just got off that topic like a week ago .
Answer:
Diseases is a particular abnormal condition that a negetavile affects the parts of the body system
The different ways we can get a disease are:
. Contaminated air
. Dirty water
.direct or indirect contact with another person who have diseases.
A plant or animal organism that lives In or on another takes the nourishment from that other organism is known as parasite.
Explanation:
<h2> Hope it helps
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<span>1. Smooth functioning of nerves-Calcium is key in helping nerves transmit messages across cells in the body.
2. Clotting of blood-Calcium helps in the clotting function of blood
3. Aids the contraction of muscles-Our muscles make use of calcium to aid them in contracting during the course of normal muscle functions.</span>