A new study has shed light on the true impact of plastic on the planet as it was revealed that millions of tonnes of it are lying at the bottom of the ocean. The true devilish nature of plastic is not a new concept, and yet, we humans continue to pump out 350 million metric tons of plastic waste per year. That waste breaks down over time to form microplastics, which are found in everything from bottled water to human placenta. How much plastic is at the bottom of the ocean?In new research conducted by Australia’s national science agency, CSIRO, Dr. Denise Hardest and her team estimated that 11…