ENV100Y5 Chapter Notes - Chapter 3: Smog, Water Cycle, Estuary
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ENV100Y5 Full Course Notes
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Chapter 3: intro to ecosystems & biogeochemical cycles. Depends on question being asked energy flow in ecosystems: ecosystem is an economy; energy is the currency, ecosystems based on autotrophs, autotrophs transform energy from sunlight or inorganic compounds into chemical energy stored in sugars. Chapter 3: intro to ecosystems & biogeochemical cycles energy converted by primary producers: growth, maintenance (respiration), reproduction. The hydrologic cycle influences all other cycles: water is both a participant in and the main transport medium for environmental processes major reservoir = oceans (97%, most freshwater: icecaps, groundwater, moves between 3 states aquifers. Humans affect the carbon cycle carbon mobilization: burning fossil fuels (geosphere atmosphere, deforestation, burning of biomass (biosphere atmosphere, cattle and rice production (biosphere atmosphere) Chapter 3: intro to ecosystems & biogeochemical cycles livestock produce 18% of greenhouse gases - more than the transportation sector: 1. 5 billion cattle worldwide - impact of intensive livestock farming on the environment is massive.
