Tasmania is an island situated off the southern coast of Australia. Sheep were brought to Tasmania in the nineteenth century. Fig. 3.1 displays the sheep population in Tasmania from 1820 to 1940. The dashed line indicates the population-growth trend.
(a)[3]
Describe the pattern in the population of sheep in Tasmania between 1820 and 1940, using the information in Fig. 3.1.
(b)[3]
Explain the change in the trend of the population that you described in 3(a).
(c)[4]
Describe how farmers can use selective breeding to improve their sheep so that they are better adapted to the environment.
(d)[2]
Define what is meant by sustainable development.
Worked solution & mark scheme
This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: “(very rapid / steep) rise in numbers / no lag phase” …