If Mr. A earns N2.000 a year while Mr. B earns N8000 but Mr. A pays N200 in tax per annum while Mr. B pays N400, such tax is_______

A firm is at its optimum size when ___________

The petro-chemical industries are located in Rivers State of Nigeria due to ________

Mono production economies are those that____

Full employment is a situation in which _______

Under the ECOWAS agreement, a Nigerian can enter and stay in Ghana without a Visa for a period of ________

This table illustrates the law of _________

Petroleum 'glut' in international trade means______

Pricing and Output decisions of sellers are highly inter-dependent in markets known as _________