Water cycle and Nitrogen cycle . Science TNSB Mentoring, Class 9: lessons, tests, tasks.

1.	Biotic and Abiotic factors Difficulty: easy	2
2.	Precipitation, Evaporation and Condensation Difficulty: easy	3
3.	Components of nitrogen and carbon cycle Difficulty: easy	2
4.	Biogeochemical cycles and components of biosphere Difficulty: medium	5
5.	Processes involved in water cycle Difficulty: medium	5
6.	Processes involved in nitrogen cycle Difficulty: medium	5
7.	Carbon, nitogen and hydrological cycle Difficulty: medium	4
8.	Biogeochemical cycles and environment Difficulty: hard	7

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Water cycle and Nitrogen cycle