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Author Question: An unfueled 1000-kg experimental rocket sled on level frictionless rails is loaded with 50 kg of ... (Read 318 times) |
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.