EESA01H3 Chapter Notes - Chapter 5: Plate Tectonics, Sedimentary Rock, Igneous Rock
Document Summary
Central case: the plight of the st. lawrence belugas. This process called eutrophication, can happen in both freshwater and saltwater systems. y another possible contributor to hypoxia and eutrophication in the gulf of st. Lawrence is an influx of warm, oxygen-depleted water from the gulf stream, which displaces the cold, oxygen-rich water of the labrador current. Earth s environmental systems y earth s systems also include cycles that shape the landscape around us and guide the flow of key chemical elements and compounds that support life and regulate climate. If we get too hot, our sweat glands pump out moisture that evaporated to cool us down, or we may move from sun to shade. Negative feedback loops enhance stability and, in the long run, only those systems that are stable will persist. Input and output essentially neutralize one another s effects, stabilizing the system. y y positive feedback loop have the opposite effect.
