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Author Question: What visual clues on a system can indicate the presence of a refrigerant leak? A) A greenish ... (Read 73 times) |
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.