oligospermia (Low Sperm Count)
28 Jan 2008 A low sperm count (oligospermia) is one cause of male infertility. Although it takes only a single sperm to fertilize an..- 1127
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health
Skin Types
28 Jan 2008 Skin can be divided into various types according to its texture. It is essential to know the various types of skin, so t..- 445
health
Male Semen
28 Jan 2008 Semen is a white or grey liquid, emitted from the urethra (tube in the penis) on ejaculation. Usually, each millilitr..- 497
health
Hereditary diseases
28 Jan 2008 Many hereditary diseases are passed on within families from one generation to the next. Just as children may inherit nor..- 479
health
The Black Skin
28 Jan 2008 Our skin is made up of three distinct layers: the epidermis, the dermis, and the subcutaneous layer. The only visible la..- 518
general-articles
Internet connection types
28 Jan 2008 Analog (up to 56k) Also called dial-up access, it is both economical and slow. Using a modem connected to your PC, ..- 158
general-articles
Petroleum formation theories
28 Jan 2008 fossil fuel, petroleum is believed by most scientists to be the transformed remains of long-dead organisms. The majority..- 194
general-articles
What happens when water boils?
28 Jan 2008 When a liquid heats up, gravity causes the hotter liquid to rise to the top and the cooler, denser liquids will fall the..- 211
general-articles
Mist and fog, any difference?
28 Jan 2008 The answer lies in their thickness – and how far we can see through them (ie: the visibility). If we can see less than 1..- 232
general-articles
The magnetic field of the earth
28 Jan 2008 The earth's magnetic field has been a mystery to man ever since 13th-century philosophers first noticed lodestones (magn..- 201
general-articles
Village life in Northern Nigeria
28 Jan 2008 In the desert grasslands of Northern Nigeria, village life has changed little over the centuries. Many people still live..- 177
general-articles
Slavery in Africa
28 Jan 2008 slavery is one thing most african are noted for as being a great part of their history. Most africans believe slavery ..- 229
