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The answer is the second one
That is because South Africa is mostly found on plateaus which means that the higher you go the colder it becomes. What this means is that during colder months, there will be many low temperatures because of the benguela currents and the differences in height.
AIf the local temperature changes in favor of greater oxygen levels in the water, the population of the small fish species and the wading bird population would be changed and affected NEGATIVELY in response to the newly elevated oxygen levels over the next six months.
High levels of oxygen over an extended period of time would cause the fish to eventually become sick and to die. This would leave the wading bird species without nourishment for life and energy reproduction leading to the depletion of the bird species along with the small fish species.
Explanation:
