(a)[4]
From the information in Table 1.1, suggest reasons why the numbers of these birds have changed.
(b)[4]
An ecosystem with a broad range of species has high biodiversity. Explain the benefits of conserving biodiversity.
Biology 9700 · AS & A Level · Biodiversity
Biodiversity — practice question
In North America, the Great Lakes sit between the USA and Canada. A survey of birds in the Lake Ontario area has recorded the relative abundance of birds between 1995 and 2005. Table 1.1 gives the feeding habits and the relative change in numbers of some of the birds in the survey.
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