(a)[4]
Use the information in Table 1.1 to suggest reasons for the changes in the numbers of these birds.
(b)[4]
An ecosystem with a wide variety of species has high biodiversity. Explain the benefits of preserving biodiversity.
Biology 9700 · AS & A Level · Biodiversity
Biodiversity — practice question
The Great Lakes in North America are situated between the USA and Canada. A survey of birds in the Lake Ontario region has revealed how the relative abundance of birds changed from 1995 to 2005. Table 1.1 lists the feeding habits and the relative change in the numbers of some of the birds in the survey.