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Biogeochemical Cycles

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Natalie Rios

on 2 April 2013

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Transcript of Biogeochemical Cycles

Biogeochemical Cycles By: Natalie Rios Water Cycle Evaporation Transpiration Precipitation All things need water. Water is continuously cycled through the biosphere. On Earth, water exists in 3 forms:
- solid
- liquid
- gas Evaporation occurs when the sun's energy heats water and transforms it into water vapor, which is gas. http://www.aboutcivil.org/evaporation-in-engineering-hydrology.html Transpiration occurs when water evaporates from a plants leaf. http://bfwatercycle.blogspot.com/2008/03/accumulation.html Condensation Condensation occurs when water vapor cools and turns back into a liquid, forming clouds. http://www.shoalwater.nsw.gov.au/education/condensation.htm Precipitation occurs when water falls from clouds. For example:
- rain
- snow
- hail
- sleet http://rgeegallega.blogspot.com/2009/10/evaporation-condensation-precipitation.html Carbon and Oxygen Cycle Where does CO2 come from? What does CO2 make? Respiration Fossil Fuels Combustion Photosynthesis All living things contain carbon (C) Carbon dioxide, also known as CO2, comes from people or animals ( heterotrophs/ consumers). http://www.skepticalscience.com/breathing-co2-carbon-dioxide.htm Carbon dioxide makes glucose (starch(sugar)) http://research.fuseink.com/p28nmxamtfdqcc/difference-between-glucose-vs-fructose Humans and animals inhale oxygen, which is an important element for living things. Oxygen comes from producers (plants, autotrophs). For example, trees, flowers, etc. In photosynthesis it comes from the water producers receive. Fossil fuels are coal, oil, and gas. They are made of dead plant and animal matter and are usually found in the ground. With the help of decomposers, the dead matter is able to be found in the ground. http://www.scientificamerican.com/article.cfm?id=fossil-fuels-without-the-fossils Through combustion, fossil fuels are released into the soil. When fossil fuels are burned, they return to the atmosphere as carbon dioxide. http://crossinstrumentation.com/cross-instrumentation/industries Photosynthesis is a chemical reaction where green plants use water and carbon dioxide to store the sun's energy in glucose (sugar). Through this process, producers give out oxygen which animals or consumers then breathe in( respiration). http://en.wikipedia.org/wiki/Photosynthesis http://webclipart.about.com/od/seasonsclipart/ss/Summer-Images.htm H2O H2O H2O H2O H2O Transpiration condensation H2O Precipitation http://www.castlerock-windows.com/rain.html Evaporation Nitrogen Cycle Nitrogen Fixation Usable Forms of Nitrogen Compounds:
- nitrates
- nitrites
- ammonia Since consumers eat producers, the producers that they eat contain nitrogen. As they eat them, they also eat the nitrogen. The nitrogen helps make protein. Nitrogen helps determine the growth of the producers. Denitrification Nitrogen or N2 is the most abundant gas in the atmosphere. http://www.castlerock-windows.com/rain.html Nitrogen fixation is a process in which bacteria in the air, soil, and water changes the nitrogen in the atmosphere into a usable form for plants. http://permaculturetokyo.blogspot.com/2009/02/rhizobium-symbiosis-with-woody-plants.html Denitrification is the process in which bacteria changes nitrogen compounds back into nitrogen gas. http://www.niaes.affrc.go.jp/rp/eng/rp11.html http://eo.ucar.edu/kids/green/cycles6.htm http://www.biofortified.org/2011/11/will-cover-crops-feed-the-world/
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