Answer: When two or more lines cross each other in a plane, they are called intersecting lines. The intersecting lines share a common point, which exists on all the intersecting lines, and is called the point of intersection.
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I think its because we're not exactly immune to all the diseases, it's called the immune system because the cells defend the body from bad bacteria and it teaches your body to learn to fight against the bacteria from a virus/disease until the body is immune.
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Brooooo. Thats amazing man
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