SCIE 1P50 Lecture Notes - Decomposer, Thermodynamics, Radiant Energy

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16 Oct 2011
Department
Course
1Dr. Caroline Starrs
Science 1P50 Lecture October 7/11
First Law of Thermodynamics
Energy cannot be created or destroyed
Energy can be changed from one form to another
Second Law of Thermodynamics
When energy is changed from one form to another, some is degraded into
heat
Heat is a less usable form of energy
Increase entropy in universe
Measure of disorder
Decrease Entropy: requires work=energy input
Ecosystems Composition
Producers
Consumers
Decomposers
Turn things back into its basic forms.
Producers
Make their own food
Photosynthesis
6CO2 + 6H20 C6 H1206 + 6O2
Clean Room
(low entropy)
Messy Room
(high entropy)
Light energy
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