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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Mutations caused by air pollution. Mutations caused by air pollution.
Lyme disease and other infections are caused by the bite of a tick. Lyme disease and other infections are caused by the bite of a tick.
Glaucoma. (a) A buildup of pressure within the eye cavities, often caused by a blockage of vessels t Glaucoma. (a) A buildup of pressure within the eye cavities, often caused by a blockage of vessels t
Inflammation. Inflammation is characterized by the presence of swelling, redness, heat, and pain. Sw Inflammation. Inflammation is characterized by the presence of swelling, redness, heat, and pain. Sw
Cities and Globalization Cities and Globalization
Linguistic Diversity Linguistic Diversity
Video: Membrane Protein and Facilitated Transport (Passive Vs Active)

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