The population of salamander increases with the passage of time if the food is available in sufficient amount.
At which point the plants are less abundant?
In the second graph, the peak point is the point at which the plants that the salamanders prefer to eat are less abundant compared to when they first colonized the island because with the increase in population, the plants on which the salamander feed will decrease in population.
So we can conclude that the population of salamander increases with the passage of time if the food is available in sufficient amount.
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