In an area in Africa, during dry months, temporary pools form where rivers flow during rainy months. Some fish have developed the ability to use their pelvic fins, which are on the underside of their body, as feet. They can use these feet to travel on land from one temporary pool to another. Other fish in these pools die when the pools dry. What can be expected to happen in this area after several years?
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In an area in Africa, during dry months, temporary pools form where rivers flow during rainy months....
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