One million of those are on the head and 100,000 are on the scalp. At this time this is the largest number of hair follicles a human will ever have because follicles do not continue to grow during life. As we grow older, the density of hair follicles decreases.
It is necessary to keep track of your company's annual revenues for your tax return and for your company's financial statements. Your annual revenue is the total income generated from your business over the last year.
Annual net income is simply the net income for a given year, four quarters in a row. It's referred to sometimes as the company's bottom line, because net income is at the bottom of the standardized income statement. (Revenue is sometimes referred to as the top-line number for the same reason -- it's at the top.)