… when it is depleted? The ozone layer is one of the most debated scientific subjects of the last decade. The growing problem of its depletion is being researched heavily all over the world, and methods are being researched to try and solve the problem.…

… earth's atmosphere, it is caused by careless use of hazardous chemicals and fossil fuels, it may leave our planet uninhabitable in the future. Some pollution caused damage to our respiratory system, which lead short of life span of individuals, dependin…

… like most the other African countries, have known the succession of many years of drought. "Drought is the consequence of a natural reduction in the amount of precipitation received over an extended period of time, usually a season or more in length,…

… when a country gets near the top of the food chain with a highly educated work force and a large professional class?" In the living world, every form of life is food for another. Food chains show how food and energy are passed between species. The…

… by Aboriginal Australians to the European invasion, led by Cook, was first signaled on 19 April 1770 when a youngster threw a stone. This resistance has never ended. This 'war' was never sanctioned or officially recognized by the British Empire, because…

… landmasses have not remained in fixed positions, but have moved around the earth's surface apparently independently. It is important in evolution because of the effects it has had on evolution and taxonomic diversity, brought about by the collision…

… countries, most would say that they have some very similar characteristics. Third world countries are often thought of as places that are impoverished, have significantly high birthrates, are economically dependent on advanced countries, and have…

… volcanic eruption of the twentieth century took place on the island of Luzon in the Philippines, only 90 kilometres (55 miles) northwest of the capital city, Manila. Up to 800 people were killed and 100,000 became homeless following the eruptions, which…

… feat not to be replicated. To think that this was built in the 7th Century B.C., by man and only by hand is amazing. There have been satellite photos of the Great Wall from space and reports that it can be seen from the moon. The Badaling…

… genuine, unadulterated or the real thing. In modern times tourism is frequently accused of destroying authenticity ((a notion which is problematic in its own term), through commoditization of cultures, such as festivals, dance rituals and food which…