How did the construction of a parking lot, hiking trail, and playground affect the fish populations in the pond? .

For construction of parking lot, hiking trail, and playground, area is required which results in the destruction of ponds which further affect the population of fish. Due to destruction of ponds, population of fish decreases.

Construction of parking lot, hiking trail, and playground results in formation of waste and the disposal of these waste in water creates water pollution which is harmful for all aquatic species. Thus, polluted water affect the population of fish badly.  

b) mutualism

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