. "He listed the problems it causes because it doesn???t readily biodegrade, it contains harmful chemicals such as Bisphenol A and phthalates that leach out and disrupt hormones in people and wildlife, and it takes non-renewable petroleum to make it.However, he said, only 3 percent of the petroleum used in the U.S. is going toward making plastic while 87 percent goes toward energy and transportation." . . . .