After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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There are more sensory neurons in the tongue than in any other part of the body.
Natural capital degradation
Mahatma Gandhi and Corrie ten Boom exemplified Kohlberg’s stage 6 moral thinking. They devoted ...
GDP and Capital per Worker, 2009
A car wash reduced the price of a basic wash as a promotion and test of the market. With the ...