Our bodies only absorb 4% of the available 21% Oxygen in the air that we breathe in.
The surface area of the lungs is the same size as a tennis court !
It never rests.
the nervous system controls our body with us knowing it and with us not knowing it
One interesting fact about paper is that it comes from trees.
what is one interesting fact about eris? it is a dwarf planet
One interesting fact about the Yellow River is that one third of it is unfit for drinking and agriculture.
One interesting fact about the U.S. is although it is the youngest country around, it is the most powerful.
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International sport is not used in the metric system, although international sport does use the metric system.
Belgium has a long history and many interesting facts. One interesting fact about Belgium is that they legalized euthanasia in 2002 and gay marriage in 2003.
One fact is that Hades is the brother of Zeus.
The Circulatory System pumps blood and the Respiratory and Digestive System carry it though your body.
one interesting fact about jack London is that he was deserted by his father.he is a batard.(bastard in french)