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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Sequential decline of whale catches in the Antarctic shows the strong effect of human predators. Sequential decline of whale catches in the Antarctic shows the strong effect of human predators.
Visual Acuity Testing, Snellen Vision Chart Visual Acuity Testing, Snellen Vision Chart
Snellen chart Snellen chart
This chart illustrates the bottom up assumption about government. In this, attitudes, culture, and This chart illustrates the bottom up assumption about government. In this, attitudes, culture, and
Children in Baltimore (1909) pull the stringy parts from beans in preparation for canning. Photograp Children in Baltimore (1909) pull the stringy parts from beans in preparation for canning. Photograp
Starter diagnosis chart. Starter diagnosis chart.
Video: Protein Structure - Primary, Secondary, Tertiary and Quaternary

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