A $50$-year survey of marine animal biodiversity in Canada's coastal waters was carried out. The percentage fall in the number of marine animal species between $1950$ and $2000$ is shown in Fig. 1.1.
(a)[3]
Suggest reasons for the drop in the number of marine animal species between 1950 and 2000.
(b)[2]
Explain what is meant by biodiversity.
(c)[3]
Discuss the advantages of preserving the biodiversity of a marine ecosystem, such as the one in the coastal waters of Canada.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “water pollution” …