Biosensor it affects marine organisms, especially plankton (floating microorganisms) and viruses that attack plankton. Plankton form the base of the marine food chains and are believed to affect our planet's temperature and weather by uptake of CO for photosynthesis. Deneb Karentz, a researcher at the Laboratory of Radio-biology and Environmental Health (University of California, San Francisco) has devised a simple method for measuring ultraviolet penetration and intensity. Working in the Antarctic Ocean, she submerged to various depths thin plastic bags containing special strains of "E. coli" that are almost totally unable to repair ultraviolet radiation damage to their DNA. Bacterial death
Food Chains (film) documentary about the same topic. He concluded that "Food Chains" was 'simultaneously inspirational and deeply depressing.' Writing for the "San Francisco Chronicle", Tara Duggan added that there were 'many chilling moments' in the documentary. In "The New York Daily News", Elizabeth Weitzman called the documentary 'unsettling,' concluding 'you will certainly leave the theater more enlightened than when you arrived.'. Jeannette Catsoulis of the New York Times called the film 'rousing' and 'emphatic and empathetic.'. Food Chains (film) Food Chains is a 2014 American documentary film about agricultural labor in the United States directed by Sanjay Rawal. It was the Recipient