LIFESCI 2H03 Lecture Notes - Hydrothermal Vent, Stromatolite, Chemosynthesis
11 Jun 2013
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Document Summary
January 21st, 2013 red planet gathering material from space. Water vapour entered the atmosphere as super heated steam, condensed, precipitated and cooled the planet. Ocean reshape earths surface and transformed it into a planet that could support life. Half the oxygen we breathe comes from photosynthetic organisms in the ocean regulates the earth s temperature shark bay stromatolites: made up of layer of bacteria, sand and dirt particles adhere to these bacteria. Ocean filled with anaerobic bacteria stromatolites use pigmented cells to create food from solar energy with an oxygen by product. Oxygen accumulated in the atmosphere, allowing more complex life to evolve in the ocean stromatolites became prey for the new organisms. Hydrothermal vents: powered by volcanoes, hot mineral laced water, dissolves minerals and toxic metals and boils back up to the sea floor, minerals and metals precipitate out chemical energy harness by anaerobic bacteria.
