Planet Earth

History Some of the materials that form the come on of the reason may bring been by rivers or vol back endoes only yesterday. However, the human race was formed just about four and a half(prenominal) billion years ago. The archives of man on earth dates back only 1 million years, in unconditi hotshotd contrast to the age of the planet. During this forgetful period of time, human beings stomach developed a long anatomy of races, languages and cultures. Some of the variety of our species development can for sure be attributed to the variety which exists in nature - we have adapted to living in some(prenominal) tropical and polar climates and can be found well-fixed in natural conditions variable greatly in temperature, flat coatscape painting and fertility. Natural Resources Our primary subscribe to is our own lifespan allege and fundamental to the resource social system of the earth is the competency of th e sun. It is the power plant that drives all other systems. The earths natural resources accept mineral deposits, basiss and water and also the plants that support animal life (which supports itself in part by preying species upon species). The dispersal of these natural resources all over the earths surface is far from even. The whereabouts of mineral deposits front on events in the remote geological past.

Patches of fertile foulness may figure on events more re pennyime, such as the period of rivers or movement of shabu. Approximately 20 per cent of the earths surface is covered by or frozen soil, making unpolished use impossible. ! Another twenty per cent is higher(prenominal) ground where conditions ar too harsh for the cultivation of crops. A further twenty per cent is and or desert and amid five and ten per cent of what remains has no soil due to the action of ice or floods. This leaves only thirty to thirty-five per cent of the land surface where food yield is possible. ? Continental Drift The migration of the continents is one of the most important features of the theory of the...If you expect to get a full essay, order it on our website: BestEssayCheap.com

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