The continental shelf is an underwater landmass which extends from a continent, resulting in an area of relatively shallow water known as a shelf sea.Much of the shelves were exposed during glacial periods and interglacial periods.The shelf surrounding an island is known as an insular shelf.The continental margin, between the continental shelf and the abyssal plain, comprises a steep continental slope followed by the flatter continental rise.Sediment from the continent above cascades down the slope and accumulates as a pile of sediment at the base of the slope, called the continental rise.he shelf surrounding an island is known as an insular shelf. The continental margin, between the continental shelf and the abyssal plain, comprises a steep continental slope followed by the flatter continental rise.
Price elasticity is a measure of the responsiveness of demand or supply of a good or service to changes in price. The price elasticity of demand measures the ratio of the proportionate change in quantity demanded to the proportionate change of the price . The price elasticity of supply is analogous.
Cross price elasticity of demand measures the responsiveness in the  quantity demand of one good when a change in price takes place in  another good. Whereas, income of dema â¦ nd responds to the sensitivity  of the quantity demanded for certain product in response to a  change in consumer goods.f the cross price elasticity is positive, then we call such goods Substitutes (example: pizza and burgers -- you usually consume either or). The income elasticity of demand measures the change in the quantity demanded of some good, when the income changes, holding everything else constant.