ENV100Y5 Lecture Notes - Lecture 3: Acasta Gneiss, Gravitational Collapse, Hydrogen Sulfide
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ENV100Y5 Full Course Notes
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Document Summary
Consumers (heterotrophs): organisms that gain their energy by feeing on other organisms. Animals eat plants (becoming primary consumers) or eat animals that have eaten plants (becoming secondary consumers) and take in oxygen. Geothermal energy: terrestrial energy: heat that emanate from the earth"s interior: powered by radioactivity (natural phenomenon that involves the release of radiation by radioisotopes as their nuclei spontaneously decay. Internal heat drives geological processes (magma erupts from volcanoes and warms ground water/ thermal hot springs) Chemosynthesis: bacteria and hydrothermal vents use the chemical energy of hydrogen sulphide to transform inorganic carbon to organic. Earth as a planet: planet is the environmental base for everything that we have in the environment. The nebular hypothesis: explains the origin of the solar system. Interstellar (between stars) cloud inherits elements from previous generation of stars. Interstellar cloud of gas and dust was rotating and began to collapse in on itself.
