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Phagocytosis is the act of ingestion and digestion of microorganisms, insoluble particles, damaged or dead host cells, and cell debris by specific types of cells called phagocytes such as macrophages, … Read More
Plains are certainly the most important and populous landforms because the world population lives on them. Some plains have fertile soils and they are extensively cultivated for agricultural purposes. One of the … Read More
Ocean current definition Ocean currents refers to the regular movement of large masses of surface water from one part of the ocean to another. The ocean water does not remain … Read More
What is an ocean? An ocean is the wide open mantle of water surrounding the continents. The oceans and seas cover 71% of the total earth surface which means that … Read More
Nitrogen Cycle Definition Nitrogen cycle involves the complex process by which nitrogen is naturally added and removed from the soil. It is a sequence of reaction indicating the various means … Read More
Overview of Photosynthesis Photosynthesis is the process by which carbon dioxide from the air is fixed into organic molecules and it helps to produce over 99% of food for living … Read More
Pollution Meaning Pollution is simply defined as the release of substances into the environment in quantities that are harmful to man and animals health. These substances released are called pollutants, … Read More
Tropics is the word derived generally from Tropic of Cancer and Capricorn, the parallels at a latitude of 230 which shows the outer limit of the areas where the sun can … Read More