Human Influences on the Environment
1. This question has 5 part(s).
1.1. Draw a ring around the most appropriate word from each of the square brackets to complete the sentence.
A highly biodiverse ecosystem is [stable / large / successful] because of the number of [competing / complementary / interdependent] species it contains. |
1.2. Which of A - D is most likely to lead to a biodiverse ecosystem?
☐ | A | A large number of unconnected food chains |
☐ | B | A large number of interconnected food chains |
☐ | C | A small number of unconnected food chains |
☐ | D | A small number of interconnected food chains |
1.3. Figure 1 shows a food web from a marine ecosystem.
Figure 1
Using one example from Figure 1, describe the effect on this ecosystem if the fish were removed by human activity (too much commercial fishing).
1.4. Identify the producer species in Figure 1.
1.5. Which of the factors A - D is not likely to have a negative impact on biodiversity of the marine ecosystem shown in Figure 1?
☐ | A | Human introduction of more lobsters into the area |
☐ | B | Global warming |
☐ | C | Sewage ingress into the sea |
☐ | D | Imposition of fishing quotas |
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