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Author Question: Among the four contact methods: Mail, Telephone, Personal and Online, which one is the poorest in ... (Read 171 times) |
The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.