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Author Question: How does the wavelength (in a vacuum) of a high-frequency electromagnetic wave compare with a ... (Read 38 times) |
The familiar sounds of your heart are made by the heart's valves as they open and close.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
The average office desk has 400 times more bacteria on it than a toilet.
There are more nerve cells in one human brain than there are stars in the Milky Way.