Biogeochemical cycles. Science State Board, Class 9: lessons, tests, tasks.

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1.	Introduction
2.	Environmental protection and adaptation
3.	Biogeochemical cycle
4.	Water cycle - introduction
5.	Water cycle
6.	Nitrogen cycle - Introduction
7.	Nitrogen cycle
8.	Carbon cycle - Introduction
9.	Carbon cycle
10.	Mind map

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.	Properties of carbon cycle Difficulty: easy	2
5.	Nature and environment Difficulty: medium	4
6.	Biogeochemical cycles and components of biosphere Difficulty: medium	5
7.	Processes involved in water cycle Difficulty: medium	5
8.	Processes involved in nitrogen cycle Difficulty: medium	5
9.	Transpiration, nitrogen and hydrological cycle Difficulty: medium	5
10.	Carbon, nitogen and hydrological cycle Difficulty: medium	4
11.	Nitrogen and hydrological cycle Difficulty: medium	5
12.	Biogeochemical cycles and environment Difficulty: hard	7
13.	Different processes involved in biodeochemical cycles Difficulty: hard	6

1.	Training test 1 Difficulty: medium	9
2.	Training test 2 Difficulty: medium	8

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Methodical recommendation

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