When addressing a letter to a post office box, or PO Box, the key difference is that you'll specify the PO Box number in place of a normal street address. Start by writing the recipient's name in the first line, followed by the business or...

Plus, learn how to reuse paper in creative and sustainable ways Trees are an essential part of the planet's ecosystem; they provide oxygen, clean the air, provide shade and food, and are used as homes by many creatures. To keep creating...