ENV100Y5 Study Guide - Midterm Guide: Temperate Deciduous Forest, Sympatric Speciation, Allopatric Speciation
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ENV100Y5 Full Course Notes
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Document Summary
Paleolithic use of stones and fire to shape environment. Industrial urban society powered by fossil fuels. Medical-technological advances in sanitation and medicine, burst of technological advances, green revolution. Tragedy of the commons: each individual withdraws whatever benefits are available from the common property as quickly as possible (selfish needs) and eventually it becomes depleted. Bioremediation use of naturally occurring microbial organisms to accelerate the cleanup of chemicals at polluted sites. Chemosynthesis use chemical bond energy to transfer inorganic carbon compound to organic. Primordial soup: heterotrophic hypothesis mixture of inorganic compounds resulted in creation of life; heterotrophic b/c it"s predicted that the first life forms used organic compounds from the env"t as an energy source. Seeds from space: the pansermia hypothesis comets brought water and organic compounds to earth. Chemotrophic hypothesis life originated at deep-sea hydrothermal vents where sulphur was abundant, first organisms were chemotrophs (extrophiles) Allopatric speciation divergence of species due to geographic barrier.
