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Nutrient Cycle

The nutrient cycle depicts how nutrients move through the food-chain and are recycled and re-enter the system.

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Shelford’s Law of Tolerance

Shelfords Law of Tolerance

Shelford’s Law of Tolerance states that for every organism there is an optimum in regard to environmental factors. When environmental factors are not favourable the number of individuals will decrease.

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The Trophic Pyramid

The trophic pyramid depicts how energy is created by the producers and illustrates how at each trophic level the number of organisms in the environment of that trophic level become fewer as we reach the top of the pyramid. This is due to energy which is used by individuals for biological processes and this energy is not passed on to the …

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The Nitrogen Cycle

Nitrogen Cycle

The Nitrogen Cycle describes how nitrogen is moves through the food chain and how this valuable element re-enters the system.

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