GGRA03H3 Lecture : You're welcome
Document Summary
old approach is going to somewhere undisturbed and study. the study of relations of living organisms to each other and surroundings. ecosystem studies flows within particular ecosystems, of nutrients, energy, waste, and the subsystems that structure those flows. cities are a special kind of ecosystem that human have created. there is no waste in natural ecosystems. waste disposal solutions involve finding better waste sinks, not reducing. Industrial ecology seeks to close loops, using industrial waste for other industries. on global scale, all loops are closed. cities extended their chain (input and output) on a global scale. landfills are extremely toxic, they are extremely expensive to make, recycling becomes more popular www. notesolution. com. raw material are becoming more expensive, motivation to recycle. people look for ways to close the loops. key works on urban ecology, studies cities as flows (of people, energy, goods, etc)
