National expenditure is aggregate spending on national output . Natural environment embraces natural resources including land, vegetation, wildlife, air and water and the amenity which they confer. National income is a measure of the value of goods and services available to the people in an economy in a given period. National income is the incomes created from producing the output.
National output is sum of the value added by each domestic firm.
Natural monopoly is a firm that can satisfy all the market demand, but still has unexploited cost savings. See also Maslow hierarchy of needs . Need-satisfaction approach An approach to selling that focuses on identifying the customer's needs and then creating a presentation that addresses those needs. Negotiation is a conferring with another with the view to compromise or agree on some issue. Also see non-verbal communication .