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27/09/2020 12:19 pm
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The graph below shows the changes in two populations of herbivores in a grassy field. A possible reason for these changes is that
(a) all of the plant populations in this habitat decreased.
(b) population B competed more successfully for food than population A did.
(c) population A produced more offspring than population B did.
(d) population A consumed the members of population B.
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27/09/2020 12:21 pm
(b) population B competed more successfully for food than population A did.
Explanation:
If population B increased while population A decreased, these organisms were probably in competition for the same food (grass) and population B was better adapted. Hence, population A is competitively being excluded from the population.