The initial increase of magnetic field in magnetic storms is caused
Options: when the shock wave, associated with the gusty solar wind, compresses the magnetosphere, when there is a large decrease in field intensity, when the gust wind itself engulfs the magnetosphere, None of the above
Options: a condition in the international market where nations do not impose customs duty or other taxes on import of goods, market where the price of a commodity is determined by free play of the forces of supply and demand, ports that are exempted from payment of customs duty on articles of commerce, primarily to encourage tourism, None of the above
Which are the important meeting of the Commonwealth?
Options: Biennial meeting of the Commonwealth Heads of Government (CHOGM), Annual meeting of the finance minister of the member countries, Regular meeting of the minister of education, law, health and other minister, All of the above