D Zaklikowski's article in Ami re: pictures and the Lubavitcher & Satmar Rebbes
Full description
Descripción: Tema 54 definitivo parte A
http://mbaignoumaterial.blogspot.com/ Please send your documents/contribution at [email protected] . Send documents in *.pdf or *.doc format only. Your contribution is vital for success o…Full description
Full description
Barchip 54
Descripción completa
Descripción completa
54. Lopez, M. - ComteDescripción completa
54th issue of the Warhammer Monthly magazine.
ProposalDeskripsi lengkap
Descripción: Elige tu propia aventura http://librosetpa.blogspot.com.es/
Descripción: Fasciculo 54 de la colección de armas de guerra dedicado a los vehiculos de la guerra de vietnam.
implan okDeskripsi lengkap
Beads
law
Temas de actualidad como circunscripciones territoriales, el Sumak Kawsay, Turismo comunitario entre otros son abordados con especial tratamiento. Una lectura oportuna para cabal comprensión…Descripción completa
Janita Zhang Jan. 31, 2012 IB ESS – 4.2 Eutrophication Notes 5.4.1 Outline the processes of eutrophication. eutrophication.
Eutrophication is the addition of excess nutrients to a wat er system, which leads to the growth and subsequent death of algae, which reduces the dissolved oxygen available for other aquatic organisms Or simply: the process of nutrient enrichment of an ecosystem
The main stages or steps of eutrophication are (in order): 1. Nutrients wash into a river or stream. 2. Algae grow quickly in response to t he added nutrients. 3. The algae block sunlight to aquatic plants, so photosynthesis slows, and less oxygen is released into the water - low DO levels. 4. Decomposer populations increase because they have more food (the algae), and they use up all the oxygen for respiration - high B OD levels. 5. Fish and other consumers die due to the lack of oxygen and the lack of producers at the base of of the food web. Nitrates and phosphates are the most common nutrients responsible for eutrophication. eutrophication. They tend to come from a few major sources: detergents (laundry soap and dish soap washed down the drain) agricultural fertilizers livestock waste from farms human sewage topsoil erosion
Process (Positive Feedback): 1. Increase in algae productivity in the lake 2. Massive increase in algae 3. Increase in dead organic matter due to increase in decomposer as there are more algae for food 4. Higher rate of decomposition as the decomposers respiration 5. Increase in oxygen demand but decline in oxygen level 6. Death of organisms
5.4.2 Evaluate the impacts of Eutrophication. Impact Death of aerobic animals Organisms been poisoned due to algal blooms Increase of turbidity Loss of macrophysics Declines in biodiversity and loss in food chain length Loss of water resources to human Impact on tourism due to bad smell and ae sthetic reasons
5.4.3 Describe and evaluate pollution management strategies with respect to Eutrophication. Minimize the amount of nutrients being released into the system by: limiting production/use of detergents containing phosphates create buffer zones between agricultural land and water sources prevent animal waste from leaching into groundwater and river s/streams
Treat the polluted area by: pumping air into the water source divert or treat sewage properly dredge (dig up) contaminated sediments physically remove algae blooms