Both types of IUDs work primarily by preventing sperm from fertilizing an egg. The copper IUD releases copper into the uterus, which works as a spermicide. The others release a form of the hormone progestin into the uterus. The progestin thickens the cervical mucus so that sperm can't reach the egg.
Commercial agriculture. Commercial agriculture is a large-scale production of crops for sale, intended for widespread distribution to wholesalers or retail outlets. In commercial farming crops such as wheat, maize, tea, coffee, sugarcane, cashew, rubber, banana, cotton are harvested and sold in the world markets.
DEFINITION of 'Commercial'. Relating to commerce. In the investment field, the term commercial is generally used to refer to a trading entity engaged in business activities that are hedged by positions in the futures or options markets.A commercial plays an active role in the futures and forward markets, ranging from the initial production to the final sales.While the term is also widely used in other areas of finance and everyday life, it generally denotes an activity that pertains to business or one that has a profit motive. commercial plays an active role in the futures and forward markets, ranging from the initial production to the final sales. While the term is also widely used in other areas of finance and everyday life, it generally denotes an activity that pertains to business or one that has a profit motive.