Function. Plants also have a pH rating. Plants whose pH matches the soil's pH can take up nutrients more efficiently than plants with a pH rating different than the soil. Pine trees and the needles that they produce prefer acidic soil.
Price of a Stamp. The current price of a first class stamp is 49 cents. A domestic first class letter (1 oz.) is 49 cents. The price of each additional ounce is 21 cents. It will cost you 34 cents to send a domestic postcard.
A. Yes. ForeverÂ® stamps do not have a denomination and will be valid whenever they are used. After the January 27, 2013, price change, the price of a Forever stamp will be $0.46. Most new First-Class Mail commemorative stamps will be Forever stamps.