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Unit 0: The Earth as a Singular System - Coggle Diagram
Unit 0: The Earth as a Singular System
Human Impact on Enviornment
energy production
developed countries highly dependent on fossil fuels
contributes to pollution, land degradation, global warming, etc
greenhouse gases insulate the earth, increasing temp
increased reliance on fracking
chemicals released are detrimental to enviornment
ecological footprint
measure of how much an individual consumes, expressed in area of land
hectares 100mx100m
the tragedy of the commons
individuals use shared recourses in their own best interest, which in turn degrades the recource for the rest of the population
Systems
any set of interacting components that influence one another by exchanging energy, materials, or information
both man made and natural
human alteration of systems
conversion of land
change chemistry of land, air, water, etc
not always bad: Native American use of fire which led to the Great Plains
types of systems
open
exchanges of matter and energy occur between multiple systems
closed
changes of matter and energy occur within a single system
Chemical Aspects
radioactivity
spontaneous release of material from the nucleus of radioactive isotopes
half life
aunt of time it takes or half of the substance to decay
chemical bonds
covalent
non-polar covalent
electrons shared EQUALLY
polar covalent
electrons shared UNEQUALLY
share electrons
ionic
not as strong as a covalent bond
trading electrons
hydrogen
between hydrogen and covalently bonded other atoms
acids, bases, PH
acids
contributes h+ to a solution
bases
contributes OH- to a solution
pH
0 (acidic) ------ 7 (neutral) ------ 14 (basic)
indicates relative strength of acids and bases
Environnemental Interactions
ecosystem services + environmental indicators
5 global scale enviornmental factors
biodeversity
food production
human population
recourse depletion
avrg global surface temp + CO2 emissions
feedback loops
positive
change in system is amplified
negative
system responds to change by returning to original state or by decreasing rate at which change is occurring