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ඔබ දැන් භාවිතා කරනුයේ අමුත්තන්ගේ ප්‍රවේශයයි.
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Course index
  1. Eg11_Sci
  2. 15.Biosphere
  3. 4.2 Investigates the mechanisms that contribute to maintaining the balance of the ecosystem

4.2 Investigates the mechanisms that contribute to maintaining the balance of the ecosystem

සම්පූර්ණ කිරීමේ අවශ්‍යතා
◄ 4.1 Investigates the organizational level of the biosphere and interactions existing with it.
4.3 Explores various types of pollutants and their adverse effects. ►
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e-thaksalawa consists of resources developed aligned to grade 1 to 13 curriculums such as creative lessons, all learning resources including past papers, term papers, questions, syllabuses, text books, teacher instruction manuals.

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