There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Excessive alcohol use costs the country approximately $235 billion every year.
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Thyroid conditions may make getting pregnant impossible.
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The longest a person has survived after a heart transplant is 24 years.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
Burial caves from Mangaia, Cook Islands, document the changing patterns of mortuary ritual.
A typical bank statement.
How to solve word problems with two unknowns (Question 3)