Passage VI
Scientists established 5 artificial marine ecosystems (A-E) to study the interactions of oil spills and organisms. Table 1 shows what was added to each ecosystem.
The oil, bacteria, fertilizer, lugworms, and flounders were added in early March. Figure 1 shows how the concentration of oil in Ecosystems B, C, D, and E, and the number of bacteria/mL in Ecosystems C and D changed over 16 months.
Figure 2 shows how the number of lugworms/m2 changed over 16 months in each ecosystem.
Figure 3 shows how the biomass of flounders in kilograms/1,000 m3 of water changed over 16 months in each ecosystem.
32. Which of the following reasons best explains why the biomass of the flounders was determined rather than their numbers?
Your Answer is
Correct Answer is H
Explanation
General knowledge questions.
The number of flounders is not considered because the impact of oil spill on flounders is not necessarily the impact on the population number, it may affect the normal growth of flounders, so choose H