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spec: Biology , health and therapy studies , human behaviour , social conditions and geography are all studied here - it is very much a place for people who want to tackle current headline problems . On the earth meridians are usually spaced 15 degrees apart so that they can also mark the time zones which are 15 degrees wide These are zones , or time zones , in which one hour is 15 wide with the Standard Meridian in the middle . We are not going to recognize Israel , " Mohammed Nazzal , a senior official accompanying the group 's exiled political leader Khaled Meshal , told reporters after their delegation arrived in Moscow.Meshal said Friday that Israel must withdraw from territories occupied in 1967 and allow return of Palestinian refugees if it wants peace.Meshal said that if Israel took these steps , " our movement will have taken a big step toward peace .