Multcolib Homework Center Picks: The Immune System, or Things That Make Me Sick
Annotation:No one likes the idea of worm attached to the inside their stomach or something sucking their blood, but not all parasites are scary. Learn how some can even be beneficial.
Annotation:Even bugs so tiny they can't be seen with the human eye can have a big effect. From causing wars to curing diseases, find out how even the smallest of them have left their mark on human history.
Annotation:Filled with facts like what germs are good for you and which germs taste good, plus eleven cool experiments to try.