Month: June 2015

8 ECONOMIC IMPORTANCE OF CORAL REEF

Coral reefs are diverse underwater ecosystems held together by calcium carbonate structures secreted by corals. Coral reefs are built by colonies of tiny animals found in marine waters that contain few nutrients. Most coral reefs are built from stony corals, which in turn consist of polyps that cluster in groups. The following are economic importance …

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6 PROCESSES OF PHYSICAL /MECHANICAL WEATHERING

6 PROCESSES OF PHYSICAL OR MECHANICAL WEATHERING

Mechanical or physical weathering is any of the various weathering processes that cause physical disintegration of the exposed without any change in the chemical composition of rocks. The following are 6 processes of physical/mechanical weathering. Frost action (freeze/thaw effect) – this is the breaking of rock due to pressure exerted by freezing water into rock …

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5 PROCESSES OF CHEMICAL WEATHERING

Weathering is the breakdown of rocks at the earth’s surface, by action of rain water, extremes of temperature and biological activities. It does not involve the removal of rock materials. Chemical weathering is the weakening and subsequent disintegration of rock by chemical reactions.  The following are 5 processes of chemical weathering Hydrolysis, this is chemical breakdown …

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15 STRATEGIES TO IMPROVE TOURISM IN AFRICA

15 ways to improve tourism in Africa

Tourism  is social, cultural and economic phenomena which entail the movement of people to the countries or places outside their usual environment for personal or business/professional purposes. In other words tourism can be defined as the travel for recreation, leisure, religious, family or business purposes usually for limited duration. this article is going to share …

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5 CONDITION FOR EXISTENCE OF CORAL REEFS

Corals is limestone rock made by accumulation of skeletons of tiny marine organisms called coral polyps. Reefs are shallow, mostly submarine features, build primarily by colonies of living marine organisms, including corals, sponges and shellfish. Coral reefs occur only in the places coral polyps can survive and thrive .  The following are five conditions which …

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