5. Nutrients in air soil and water Producers consumers decomposers photosynthesis feeding decay respiration and excretion feeding Unavailable organic nutrients coal, oil, peat Unavailable inorganic nutrients, mineral in rocks fossilisation burning erosion
9. The Greenhouse Effect G.H. gases don’t absorb visible wavelengths of light What would reflect solar radiation? What form does the energy become when absorbed by the Earth? G.H. gases can absorb and re-emit infra red radiation
13. Global Warming and Crop Yields Why are food prices predicted to increase due to global warming? How will increased CO 2 effect crop yields? How will increased temperature effect crop yields? So what’s the problem….?
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15. Global Warming and Crop Yields: Rice Is there a correlation? What is the relationship between yield and minimum temperature? What is the relationship between yield and light intensity?
16. Global Warming and Crop Yields: Rice What has the biggest effect on yield? Which factors will change due to global warming? How can we explain this effect?
17. Global Warming and Migration What will happen to these biomes as the global temperature increases? How will organisms respond? Describe this in terms of niches.
21. Nutrients in air soil and water Producers consumers decomposers photosynthesis feeding decay respiration and excretion feeding Unavailable organic nutrients coal, oil, peat Unavailable inorganic nutrients, mineral in rocks fossilisation burning erosion
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38. The Nitrogen Cycle Nitrogen-fixing bacteria in root nodules. Nitrogen-fixing bacteria Nitrite bacteria Nitrate bacteria Denitrifying bacteria Haber process: fertilisers Lightning
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41. One post per idea. Use your real names! Chemical or Organic? http://www.wallwisher.com/wall/kegschgbiology13A
42. One post per idea. Use your real names! Chemical or Organic? http://www.wallwisher.com/wall/kegschgbiology13b
47. Eutrophication: Data Interpretation What does this chart suggest about eutrophication in the esturies of the USA? What is the percentage of esturaies with high percentage eutrophication? Which indicator suggests there is a lot of eutrophication in the USA? What does the Dissolved Oxygen indicator suggest?
48. Are these conlusions valid? The East Coast has less eutrophication
49. Are these conlusions valid? Eutrophication is caused by an increase in human population
50. Are these conlusions valid? Eutrophication is increased by warmer temperatures.
51. Are these conlusions valid? Eutrophication is caused by farming.
Search youtube for “300 years of fossil fuels in 300 seconds”
Graphs uses 1978 as a reference point
Water availability, density of planting, genetic variety of rice, nutrient availability etc. Monitor variable that can’t be controlled
Migration: Lower to higher latitudes
Saprobiotic organisms
Haber process requires high temperatures and pressures to achieve what nitrogenase does at environmental temperatures
Haber process requires high temperatures and pressures to achieve what nitrogenase does at environmental temperatures
Clay and humus particles are negatively charged, NH4+ ions stick to particles, No3- ions repelled by particles
Clay and humus particles are negatively charged, NH4+ ions stick to particles, No3- ions repelled by particles
Paddy fields contain a lot of cyanobacteria fixing nitrogen gas into ammonia.
Have a look at page 98 - 99
Use google earth to show caspian sea, great lakes – lake Erie, UK coast etc
15/99 = 15.15%, Chla = Chlorphyll a, DO = dissolved oxygen, Nuisance/toxic blooms = frequency of algal blooms, SAV = submerged aquatic vegetation
Pollution from duck farms, correlation between P in water and phytoplankton, but actual cause is N which is taken up quickly by phytoplankton and so is not measurable in water.
Addition of carbon and nitrogen alone had no effect, phosphates caused algal bloom. Done in 1974 led to ban on phosphates
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