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Author Question: Gravitational lensing is caused by ____. a. refraction of light through hot intracluster gas b. ... (Read 69 times) |
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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.