B is nota component of rhis
Health related fitness is working out to prevent sickness
performance related fitness is working out for the body results
Answer:
An antigen is any substance that causes your immune system to produce antibodies against it. This means your immune system does not recognize the substance, and is trying to fight it off. An antigen may be a substance from the environment, such as chemicals, bacteria, viruses, or pollen.
Explanation:
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Answer:
Explanation:
As a student, I think it has spread due to poor hygiene or practice. Most of the people I know that got it, received it from older family members. Sometimes there is also no rhyme or reason. I was exposed to a positive person twice (once in the lunch room and once in class) but with both of those experiences no one that was close contacted became positive. I think it is spread like the flu. If you stay home when you are sick then you will decrease the spread of it.
