9th Class Science Natural resources Question Bank 9th CBSE Science Natural resources

  • question_answer
      What is biogeochemical cycle? Write its  main substances.  

    Answer:

          The cyclic flow of nutrients between biotic and abiotic components  of environment  is  known as biogeochemical cycle.                         The main substances are carbon, nitrogen, oxygen sulphur, phosphorus and water. 


You need to login to perform this action.
You will be redirected in 3 sec spinner