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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?
People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.