1. notes and revision
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evs
belief system that shapes the way one thinks
cornucopians
technocentrics that believe in the abundance of natural resources and the capacity of human ingenuity to overcome environmental limits.
differences between ecocentrics antropocentrics technocentrics
Nature centrered human centered technology centered cornupians The ecocentric worldview – **puts ecology and nature as central ** to humanity and emphasizes a less materialistic approach to life with greater self-sufficiency of societies. ●➔ The anthropocentric worldview – believes humans must sustainably manage the global system. This might be through the use of taxes, environmental regulation and legislation. Is human- centred – in which humans are not dependent on nature but nature is there to benefit humankind. ●➔ The technocentric worldview – believes that technological developments can provide solutions to environmental problems. Environmental managers are technocentrists. Extreme technocentrists are cornucopians.
system
a collection of parts forming a functioning whole
synergy
the emerging of new properties from a system
open system example
lets exchange of energy and matter eg forest
closed system example
energy in but not matter in or out eg biosphere
isolated system
lets no matter or energy in and out. eg universe
transfer
Transfer refers to the movement of substances from one location to another
transformation
change in form or state of matter ie from liquid to gas
1st law of thermodynamics
energy can neither be created nor destroyed but can be converted from one form to another
feedback
this is when an output becomes an input of a system
2nd law of thermodynamics
entrophy increases overtime entrophy is the measure of disorder in a system
equilibrium
“equilibrium” refers to a state of balance or stability in a system
1. tiping point
negative feedback is overcome
positive feedback
system moves away from equilibrium
negative feedback
system moves towards equilibrium
factors affecting resiliance of a system
biodiversity large population climate
gaia hypothesis
the whole earth is an organism
resiliance
ability of a sysytem to return to its original state after a disturbance
EIAs environmental impact assessments
assess the impacts of a project and mitigation strategies.
Millenium Ecosystem Assessment
acesses health of an ecosystem using environmental indicators accessment using environmental indicators to find ways of conservivng theecosystem uses science to access the environmental indicators to find ways of conservivng them eg using an indicator species to to find a disease and how to treat the population
pollution
this is the contamination of an environment with harmful substance that affects the health of organisms
acute pollutants
ocur for a short period of time