The nylon bags or plastic bottles drifting at sea alters the activity of animals. Vi example, birds will eat the plastic pieces because they mistakenly thought it was fish roe, sea turtles back often swallowed the plastic bags because they are very similar to species of jellyfish. The piece of plastic and nylon bags will accumulate in the animals body forever because it takes so many years for new plastic can be destroyed. Gradually the chemicals in plastic will seep into the body of the animal, and kills animals from these toxic chemicals. That is the reason why plastic is a great threat for the ecosystems.
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