1 Royer, S. J., Ferrón, S., Wilson, S. T., Karl, D. M. (2018). Production of methane and ethylene from plastic in the environment. PLoS ONE 13(8): e0200574. https://doi.org/10.1371/journal.pone.0200574.
2 Ibid.
3 Ibid.
4 Ibid.
5 Ibid.
6 The Guardian - Legal plastic content in animal feed could harm human health, experts warn.
7 Pawan K. Gupta, in Veterinary Toxicology (Third Edition), 2018. Epidemiology of Animal Poisonings in Asia.