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61. Outline salient features of carbon cycling in an ecosystem.

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62.

What is meant by sedimentary cycle?
Draw a simplified model of phosphorus cycle in terrestrial ecosystem.

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63.

Give the graphic representation of nitrogen cycle.

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64. What is the other name for decomposers?

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65. Explain the abiotic and biotic components of an ecosystem.

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66. What are ecosystem services ? Briefly explain with an example.

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67.

Draw a flow diagram showing typical food chain with energy flow and cycling of materials. Give a few examples of food chains.

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The specific place in the food chain that is occupied by the organism based on the source of their nutrition or food is known as their trophic level.

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69.

Describe the process of succession on a bare rock.

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70.

How is 'stratification' represented in a forest ecosystem?

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