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Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.