The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
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In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
A Border Marks Life and Death
Plant Cell Types (Part 1)
1–12 Elements essential to animal life and health
BLOOD CELLS
Primary factors affecting blood pressure
Dolly the sheep was the first mammal cloned by nuclear transfer from a somatic cell