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Hydrarch - Ecology
Its various stages are well studied in ecosystem like ponds, pools and lakes. Since pond is a fresh water ecosystem, the succession in it is also referred to as hydrosere. Succession in pond, begins by colonisation by the pioneers like the phytoplanktons, and finally terminates into a forest which is a climax community. As succession progresses, changes take place in the kind of vegetation as well the associated animal life. The whole process of succession or the hydrosere is further subdivided into a number of stages depending on the kind of organism(s) dominating a stage.
Figure: Hydrosere in a pond ecosystem. The pond is gradually converted into a forest ecosystem. Sediments begin to accumulate, and a series of biotic communities develop until the mature ecosystem is reached
The atomic number of the isotope 238U of uranium is 92. The nucleus of this isotope contains a) 184 protons, 92 electrons, and 54 neutrons. b) 92 protons and 146 neutrons. c) 92 pr
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Explain Kashin Beck disease caused by selenium deficiency? Kashin Beck disease was identified to affect growing children in parts of Siberian Russia and China. It is characteri
what is heterotrophic nutrition ?
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Explain the Recommended Dietary Allowances (RDA)? The recommended dietary allowances are estimates of nutrients to be consumed daily to ensure the requirements of all individua
Summer Stratification - Thermal stratification Thermal stratification is fairly pronounced during the summer seasons in most lakes of the temperate (cold) regions but is rare
Hydrocarbon (HC): Hydrocarbons such as methane, ethylene, acetylene is present in air. Most of these are low molecular weight gases and liquids at ordinary temperature. Sour
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