BIOB50H3 Chapter Notes - Chapter 2: 18 Months, Density Of Air, Polar Front
8 Sep 2017
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Document Summary
Climate variation and salmon abundance: a case study. Chemical composition of air and water, which includes salinity, acidity, and concentrations of gases in the atmosphere and dissolved in water important in physical environment. Soil is important because it"s where lots of things live and it in uences availability of critical resources, such as water and nutrients. Weather current temperature, humidity, precipitation, wind, cloud cover. Climate long-term description of weather at a location, based on averages and variations. Climate determines where they live, their geographic distribution, how they function. Temperature determines rates of biochemical reactions and physiological activity. Water by precipitation is needed for terrestrial organisms and freshwater organisms. Frequency and severity of extreme temp events is predicted to increase with climate change. Timing of changes in physical env is important e. g. seasonality of rainfall determines availability of water for terrestrial organisms; mediterranean climates get rain in winter so they.
