There are approximately 3 million unintended pregnancies in the United States each year.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Women are 50% to 75% more likely than men to experience an adverse drug reaction.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Atom of the Element Lithium
Hydrogen bonding of water with itself and with other compounds
Scientists (group photo)
Group Size
Students working in a group
Mg can react with HCl to produce the white solid MgCl2 and H2 gas. A student mixes 1.99 g of ...