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Author Question: (a) What is a tumor-suppressor gene? (b) What are oncogenes? (c) What is the normal (nonmutant) ... (Read 66 times) |
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.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.