Author Question: ________ is a respiratory infection causing pressure, pain and often a headache. (Read 76 times)



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Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

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