Answer:
In cases of immune system overactivity, the body attacks and damages its own tissues (autoimmune diseases). Immune deficiency diseases decrease the body's ability to fight invaders, causing vulnerability to infections.
Explanation:
<span>Tropics
A lot of rain falls there, so the possibility of acid rain and smog which can be carried by warm humid air can also form. </span>
Answer:
the male and female reproductive systems are important so that we can keep the planet populated and have families.
The positively charged particle located at the center of an atom is the proton.
Think <em>p </em> in <em>p</em>roton and <em>p</em>ositive. Neutrons are also located in the nucleus of an atom, but they have a neutral charge (<em>neu</em>tron and <em>neu</em>tral).
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