The periodic rise and fall of the sea level on the earth, gives rise to tides. This is related to
Options: the position of the moon with reference to the earth and the gravitational pull exerted mainly by the moon and partly by the sun, infrared rays from the sun, ultraviolet rays from the sun, None of the above
What was the purpose of EFTA (European Free Trade Association)?
Options: To remove all tariffs on trade of industrial goods between the member countries, To aid the creation of a single west European market to help boost world trade, both (a) and (b), None of the above