The change in hair color occurs when melanin ceases to be produced in the hair root and new hairs grow in without pigment. The stem cells at the base of hair follicles produce melanocytes, the cells that produce and store pigment in hair and skin. The death of the melanocyte stem cells causes the onset of graying.
The revenue cycle is a recurring set of business activities and related information processing operations associated with providing goods and services to customers and collecting their cash payments.The primary external exchange of information is with customers.he revenue cycle is a recurring set of business activities and related information processing operations associated with providing goods and services to customers and collecting their cash payments.
The billing cycle length is any whole multiple of the accounting cycle. For example, a monthly billing cycle corresponds to one accounting cycle, and a quarterly billing cycle corresponds to three accounting cycles (Figure 1-3).