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Environmental Systems SL Paper 2 (November 2024, TZ2)

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  1. (a) Calculate the difference between carbon stored in kelp in the ecosystem with and without sea otters. [1]
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(b) State the trophic level of sea urchins in the kelp forest ecosystem shown in Figure 3(a). [1]

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(c) Explain how a reduction in sea otter numbers may impact the biodiversity of the kelp forest ecosystem. [3]

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(d) Outline how the protection of sea otters could help mitigate climate change. [2]

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