There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Cyanide works by making the human body unable to use oxygen.
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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The longest a person has survived after a heart transplant is 24 years.
Differences in the number and location of flagella.
The structure and function of the renal corpuscle.
The structure and function of the human testis.
How to vertically stretch and compress the quadratic function
What mass of sulfur hexafluoride, SF6, has the same number of fluorine atoms as 25.0 g of ...
A dendritic cell preparing to engulf spores of a fungus, Aspergillus fumigatus.