superstar3529 superstar3529

24-05-2018
Biology

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__________ system: the body system responsible for fighting diseases; arsenic, methylmercury, and dioxins can weaken this system

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AlpenGlow AlpenGlow

02-06-2018

The immune system.

The immune system acts as a defense system of the body. It fights against bacteria, viruses and any other disease causing pathogens. Some chemicals can weaken the immune system and make them vulnerable.

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