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What do you mean by symbiosis? What are its various types?

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What do you mean by predation? Give some examples.

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Write a note on competition.

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Differentiate between Intraspecific interactions and interspecific Interactions.

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What are the different stages of nitrogen cycle?

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Write a note on carbon cycle.

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What do you mean by biogeochemical cycles and what are nutrient cycles?

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Define biomass.

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Explain ecological pyramids.What do you mean by the pyramids of number and biomass.

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How the flow of energy, is different from that of materials?

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Write an accbunt on biotic components of an ecosystem.

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Define ecosystem and its components.

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What are the different levels of ecological organization?

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What is a species?

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Define ecology?

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Write a note on artificial selection.

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Write an account on natural selection.

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Who first proposed the mechanism of evolution?

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How would you prove that variations lead to evolution?

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Write down the types of variations.

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