There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
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People about to have surgery must tell their health care providers about all supplements they take.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Genetic variation in the color of corn kernels
How to solve rate problems leading to fractional equations (Question 2)
Economic question
A three-gene additive model for wheat kernel color
The X-linked genetic model of Morgan’s eye-color inheritance