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?
The USPS provides a simple and affordable way to mail letters using First Class Mail. To qualify as a First Class Mail letter, your mailpiece must be no smaller than 3Â½â high x 5â long and at least 0.007â thick.It must be no bigger than 6 1/8 high x 11Â½â long and no more than Â¼â thick.Letters sent via First Class Mail cannot weigh more than 3.5 ounces.The USPS provides a simple and affordable way to mail letters using First Class Mail. To qualify as a First Class Mail letter, your mailpiece must be no smaller than 3Â½â. high x 5â long and at least 0.007â thick.o qualify as a First Class Mail letter, your mailpiece must be no smaller than 3Â½â high x 5â long and at least 0.007â thick. It must be no bigger than 6 1/8 high x 11Â½â long and no more than Â¼â thick. Letters sent via First Class Mail cannot weigh more than 3.5 ounces.