Skin gets its color primarily from melanin, a pigment produced by melanocyte cells in the skin. The darker the skin, the more melanin it contains [source: MedicineNet ]. Freckles and beauty marks likewise indicate a higher concentration of the pigment in certain areas. Melanin also performs another vital function: It protects the skin against harmful UV rays.
APB Opinion No. 25, Accounting for Stock Issued to Employees, specifies that the measurement date for determining compensation cost in stock option, purchase, and award plans is the first date on which are known both (a) the number of shares that an individual employee is entitled to receive and (b) the option or purchase price, if any.
A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same quantity. Any other value of that quantity can be expressed as a simple multiple of the unit of measurement. For example, length is a physical quantity. The metre is a unit of length that represents a definite predetermined length. When we say 10 metres (or 10 m), we actually mean 10 times the definite predetermined length called metre. The definition, agreement, and practical use of units of measurement have played a crucial role in human endeavour from early ages up to this day. Different systems of units used to be very common.