how do mole occur?

Answer 1

A mole or melanocytic naevus is a small, dark spot on the skin. It can be either subdermal (composed of melanin), or a pigmented growth on the skin, formed mostly of melanocytes. The high concentration of melanin is responsible for their dark color. They are a member of the family of skin lesions known as naevi.

Moles may either be present at birth or develop later in life. Acquired moles are a form of benign neoplasm, while congenital moles are considered a minor malformation, or hamartoma. Moles are most often of no medical consequence, but since they are permanent, removal may be performed for cosmetic or other reasons. Moles are usually circular or oval and not very large. Most children are born with moles, and almost everyone has at least one or two moles on their bodies. Large amounts can be concentrated on the back, the chest and arms.

Some scientists suspect that overexposure to ultraviolet light (including excessive sunlight) may play a role in the forming acquired moles, but more research is needed in this area.

Dysplastic nevi or atypical mole syndrome is a hereditary condition which causes the person to have a large quantity of moles (often 100 or more) with some of them larger than normal and/or atypical. This leads to a higher risk of melanoma, a serious skin cancer. A slight majority of melanomas do not form in an existing mole, but rather create a new growth on the skin. Nevertheless, those with dysplastic nevi are at a higher risk of even this type of melanoma. Such persons need to be checked regularly for any changes in their moles (and to note any new ones).

Answer 2

Well, usually, they don't occur as much as they appear...

You see, moles spend most of their life underground as a form of natural protection against predators who might see them as helpless units of food. Given that moles, by nature, aren't agressive little creatures, they need to retreat into their little piece of nirvana on earth and feed on the worms, grubs and seeds they find in their subterranean burrows, evidenced by cylindrical mounds of dirt, known affectionately as molehills.

Even though the appearance of molehills on well-manicured lawns do present an aesthetic problem, to say the least, few two-legged relatives of the humble mole would thank them for their efforts in increasing the aeration of the soil they live within... except perhaps the defeated Scottish Jacobites of the 17th Century, whom legend has it, have raised a toast to "the little gentleman in the black velvet waistcoat"!

Answer 3

Do you mean Mold??

Mold spores may be found lying dormant on almost every surface in a building. Unless large numbers of spores become airborne, there is usually little problem. However, when mold spores are on a surface with an appropriate moisture content, nutrients, and temperature, the spores will germinate and mold will grow. The key to identifying locations where mold is likely to grow is finding where these conditions exist, have occurred, or are likely to develop.

Mold should not grow indoors unless there are moisture problems in the building. Obvious causes of moisture problems include occupant-generated sources, floods, roof leaks, and problems with drainage or plumbing. A less obvious source of moisture is the effect of temperature gradients (temperature differences), especially in locations where relatively warm and moist air comes in contact with relatively cool surfaces. These conditions can cause water vapor to condense on building surfaces, just as it does on a glass of ice water on a warm, humid day.

Most molds must get their food from the environment, living and feeding on dead organic matter. Outdoors, molds are very important in decomposing organic materials and recycling nutrients. Indoors, many building components and contents contain materials that are excellent food sources for mold, such as wallpaper glue, some paints, greases, paper, textiles, and wood products. Indoor dusts may contain fibers, dead skin cells, and other organic matter that can serve as a food source for mold when adequate moisture is available.

Temperature also affects mold growth. Different types of mold have minimum, optimum and maximum temperature ranges for growth. Many fungi grow well at temperatures between 60 and 80 degrees Fahrenheit, which are also ideal temperatures for human comfort. In addition, as mentioned above, temperature gradients often produce the moisture needed for mold growth.

In the summer, when air-conditioning is in use, mold growth can occur in buildings where the cooling systems are oversized, undersized or poorly maintained. Unplanned air flow in buildings can also create conditions favorable to mold growth. A competent heating and air conditioning contractor should be able to address these issues.

In the winter, when buildings are heated, mold often grows in cold, uninsulated exterior windows and walls, including uninsulated closets along exterior walls where building surfaces are generally cold relative to the indoor air temperature.

Answer 4

whats mole

Answer 5

well, when a boy mole and a girl mole love each other very much. he puts his little mole wahwah in her little mole hoohoo and in a little while a baby mole pops out.

Answer 6

it depends.
you can be born with one kind of like a birth mark kinda thing.
or you can get one as you grow older.
and sometimes,it can even be a sign of skin cancer,unfortunately :/

Answer 7

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