The Bornean orangutan is listed as Endangered and numbers approximately 41,000, while the Sumatran orangutan is considered Critically Endangered with an estimated population of 7,500. A century ago, more than 230,000 orangutans likely roamed in the wild.
Making the world better, one answer at a time. If you go to the United States Postal Service web-stie, you will find that one US First class stamp ($0.42) will cover the cost to mail a letter that weighs up to 1 ounce, about 28.35 grams. Thus, the average weight of a letter is one ounce or less. If you go to the United States Postal Service web-stie, you will find that one US First class stamp ($0.42) will cover the cost to mail a letter that weighs up to 1 ounce, about 28.35 grams.  Minor edit?
Size and Price. For your letter to qualify as First-Class Mail, you must place it in a rectangular envelope. The weight restriction for First-Class Mail is 13 ounces, which is important to consider if you're enclosing hefty items such as magazines or photographs in your envelope.As of May 2015, you can send a letter by First-Class Mail by buying a Forever stamp, which costs 49 cents.or your letter to qualify as First-Class Mail, you must place it in a rectangular envelope. The weight restriction for First-Class Mail is 13 ounces, which is important to consider if you're enclosing hefty items such as magazines or photographs in your envelope.