ESS chap.1 Foundations

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38 Terms

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EVS

environmental value system: how an individual or group perceives and evaluates environmental issues. This will be influenced by cultural, religious, economic and socio-political contexts

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Minata

1956

release of toxic products in water (contamination of fishes and dvlp of illnesses) : threats of industrialization

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Bhopal

1984

explosion that released tons of a toxic product (thousands of victims): danger of factories

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Chernobyl

1986

nuclear accident that released radioactive clouds over europe

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UN Rio Earth Summit

UN conference focusing on sustainable development, we must change our behaviors and attitudes, adoption of Agenda 21

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Environmental manager

believes everyone has an ethical duty to protect the earth and promote human intervention to maintain the state of natural systems

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Technocentric

technology-centered, believes we can solve environmental issues by using technology, focus on economic growth

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Ecocentric

earth-centered, live sustainably, preserve ecological integrity

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Anthropocentric

people-centered, nature here to benefit humans, regulations to manage sustainably

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Green politics

political ideology to decrease deforestation and preserve the rainforest's biodiversity

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System

a set of interacting parts forming a complex whole

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Open system

inputs/outputs of matter and energy (ex: forest)

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Closed system

inputs/outputs of energy across its boundary (ex: cave)

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Isolated system

exchange neither matter nor energy with its environment

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Model + examples

a simplified version of a real complex thing/to help us understand

Example: physical (solar system), software (evolution), mathematical equations

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Gaia Hypothesis

According to James Lovelock, the earth is a complex and interacting system that can reduce the impact of changes brought by humans through negative feedback mechanisms

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1st law of thermodynamics

energy cannot be created/destroyed, only converted

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2nd law of thermodynamics

the entropy is always increasing/there is always some loss

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Entropy

the measure of the amount of disorder in a system/it always increases because energy conversions are never fully efficient

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Equilibrium

balance between inputs and outputs in a system

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Steady-state equilibrium

a characteristic of open systems where there are continuous inputs and outputs of energy and matter

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Static equilibrium

another kind of equilibrium with no change over time

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Stable (equilibrium)

the system tends to return to the same equilibrium after a disturbance

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Unstable (equilibrium)

the system tends to return to a new equilibrium after a disturbance

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Resilience

the ability of a system to go back to its initial state after a disturbance

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Negative feedback loop

a system returns to its original state/stabilizes as it reduces change

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Positive feedback loop

changes a system to a new state/destabilizes as they increase change

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Sustainability

the exploitation of resources at such a rate which allows for their natural replenishment and the recovery of the ecosystem affected by their use

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Ecological overshoot

the maximum level of sustainable resource exploitation. When we overshoot this limit, we cannot go back, or it takes a lot of time and effort

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Ecological footprint

a model for measuring per capita land needed to provide all the resources for a person's lifestyle and to dispose of their wastes. (hectare)

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Primary pollutant + example

a pollutant that is directly put into the air by human activity

Example: carbon monoxide /nitric oxide

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Secondary pollutant + example

substance created by the reaction between 2 primary pollutants or a primary pollutant and water vapor

Example: Ammonium/Ozone

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3 main ways pollutions can be changed

  • changing the human activity that produces it

  • regulating or preventing the release of the pollutant

  • working to clean up or restore damaged ecosystems

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Acute effect

short-term effect

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Chronic effect

an effect that results from long-term exposure to a pollutant.

Emergent properties

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Holistic approach

taking all aspects into consideration (ex: watch)

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Natural capital

natural resources that can produce a sustainable natural income of goods or services

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Natural income

the portion of natural capital that is produces as "interest"