Evolution of photosynthesis era around 2 billion years ago. Modern photosynthesis in plants and most photosynthetic prokaryotes is oxygenic. Oxygenic photosynthesis uses water as an electron donor, which is oxidized to molecular oxygen () in the photosynthetic reaction center. Timeline of Photosynthesis on Earth Several groups of animals have formed symbiotic relationships with photosynthetic algae. These are most common in corals, sponges and sea anemones. It is presumed that this is due to the particularly simple body plans and large surface areas of these animals compared to their volumes. In addition, a few marine mollusks "Elysia viridis" and "Elysia chlorotica" also maintain a
Get What You Need Get What You Need Get What You Need is a 2003 studio album by an Irish power pop/punk rock band The Undertones. It is the band's first collection of new studio material since their reformation with lead singer Paul McLoone, who replaced the previous singer Feargal Sharkey which occurred in November 1999. Allmusic stated in their review that "It's almost unthinkable, really, that Derry's fabled good-time teen punks of yesteryear would record and continue... let alone that their output would be anything less than embarrassing." The website also stated that "you have everything you need for a complete escape to