Задание №20343 ЕГЭ по Английскому языку

Scientists Make Biodegradable Plastic

Plastic                          (BE) a blight on the landscape and a deadly threat to wildlife for decades. Scientists have developed a form of biodegradable plastic. This                          (MEAN) that the billions of plastic bags, cups, straws and utensils that we dispose each day could be “compostable” – they could decompose and break down as naturally as organic waste. The scientists are from the University of California, Berkeley. They say they have invented a plastic that could break down within a few weeks, rather than centuries,                          (USE) just heat and water. The new, biodegradable product involves embedding polyester-eating enzymes into the plastic during the production process. When                          (THIS) enzymes are exposed to heat and water, they eat away the plastic and reduce it to lactic acid. This                          (PROVIDE) nutrients for the soil when composted. Professor Ting Xu said that up to 98 per cent of the plastic                          (SHE) team had made degraded into small molecules.