Breathing, exercise and planting of trees are the human activities which prevent changes in artificial park.
Human activities such as breathing, exercise and planting of trees prevent the artificial ecosystem of the city park from changing because these activities has good effect on the park not a bad effect. Breathing provides carbondioxide gas which is used by the plants as a raw material in making food during the process of photosynthesis.
Planting more trees and plants make the park more beautiful and full of organisms because plants provides food as well as habitat for thousands of organisms so we can conclude that breathing, exercise and planting of trees are the human activities which prevent changes in artificial park.
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