Photosynthesis is about three times the current power consumption of human civilization. Photosynthetic organisms also convert around 100–115 billion tonnes (91-104 petagrams) of carbon into biomass per year. Photosynthetic organisms are photoautotrophs, which means that they are able to synthesize food directly from carbon dioxide and water using energy from light. However, not all organisms use carbon dioxide as a source of carbon atoms to carry out photosynthesis; photoheterotrophs use organic compounds, rather than carbon dioxide, as a source of carbon. In plants, algae, and cyanobacteria, photosynthesis releases oxygen. This is called "oxygenic photosynthesis" and is by far the most common
What More Do I Need? What More Do I Need? "What More Do I Need?" is the 94th episode of the ABC television series, "Desperate Housewives". It is the seventh episode of the show's fifth season and aired on November 9, 2008. The story continues from the previous episode, when Lynette confronted Tom after she thought he is having an affair. They both misunderstood each other, but the situation is immediately resolved when Lynette realizes that Porter is the one who is having sex with Anne. Lynette and Tom ask Porter to end the relationship via the phone, but Porter refuses, fearing that Mr. Schilling