Shops that use barcode readers may generate receipts with a barcode of the receipt identification number, that enables a salesperson to scan the barcode and quickly retrieve the details of the original transaction, for example if a customer seeks to return or exchange goods or there is some other query.
Both ovaries do not release mature eggs at the same time. Only one egg is, suppose, to be released each month by one of the ovaries, not both. If both ovaries release two matuâ¦re eggs and they are then fertilized, fraternal twins will be conceived.
Ovulating is what happens when an egg, or ovum, is released from the ovaries. Usually, when a woman says she is ovulating, she's referring to the especially fertile period of two to three days that precede ovulation. When a woman begins puberty, the ovaries house approximately 300,000 eggs. Despite this apparent storehouse of eggs, a woman only ovulates around 300 ova over her lifetime.