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Geo #3 - Environment Food and People Lecture#3(Sept 29/09...

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Environment, Food and People- Lecture #3 (Sept 29/09) - Agriculture and the Physical Environment - Solar Energy o Latitude and reflection (dark things=attract light and white things=reflect light) o Drives carbon and nitrogen cycles (photosynthesis) - If you want your lawn to be greener, you would put more nitrogen into it o Temperature - People believe that if you grow more plants then it’ll help out global warming - Lower temperatures, not as much grows - If it gets too hot, growth level start to decline rapidly - It depends on what you’re growing o Importance of seasonality - Further you are away from equator the greater the seasonality (E.g. Whitehorse in July there’s sunlight all day, middle of winter the sun doesn’t rise) - Big impact on growth patterns - Get all sunlight so they growth but nothing comes from it, because the growing season is too short o Length of growing season - In Toronto its from May 24 th -Thanksgiving - Global Warming o More and more carbon in the atmosphere, which doesn’t let things out -
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