Environmental
scientific process
observation
conflict
question
hypothesis
prediction
experiment
rachel carlson
silent spring; DDT killed song birds
lynn white
claimed since christians think God gave them dominion they think they can do whatever they want
aldo leopold
thinking like a mountain; secular land ethic to replace religion
utilitarian earth view
epitomizes Lynn White’s character; uncaring earth depending; dominion over everything; exploitation
gnostic earth view
material world is unimportant
no crisis philosophy
crisis claims are overstated; things are getting better; need more data
6 major elements in organisms/world
N-CHOPS
nitrogen
carbon
hydrogen
oxygen
phosphorous
sulfur
4 organic compounds
lipids
proteins
carbs
nucleic acid (RNA/DNA)
two elements that have an atmosphere
carbon and nitrogen
2nd hallmark of sustainability
for sustainability ecosystems dispose of wastes and replenish nutrients by recycling all elements
biome
group of ecosystems related by having similar type of vegetation and climate (tundra, desert etc.)
hadley cell
a system of vertical and horizontal air circulation that creates major weather patterns
law of limiting factors
after a certain level of performance has been reached results will decline in effectiveness
primary succession
initial invasion and progression from one biotic community to the next where soil ISNT present
secondary succession
ecosystem gradually re-invades area through distinct stages soil IS already present
ecosystems are structured by
feeding relationships
trophic categories
feeding groups within an ecosystem
three trophic categories
producers
consumers
detrivores/decomposers
biomass is greatest in what trophic category
producers
no matter the trophic level larger energy budget means
more biomass
1st hallmark
for sustainability ecosystems use sunlight as their source of energy
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