Answers20
What were the causes of the Great London Smog? - ANSWERS -Weather patterns stalled the air
over London.
Weather patterns lead to an inversion and stagnant air in London.
Winds blew in from industrial areas in Europe.
Post WWII economics lead to lower grade coal in power plants.
Many large power plants in the city.
Winter weather caused people to burn more fuels for heat.
Transport systems changed.
What is an example of positive feedback? - ANSWERS -Childbirth
What is an example of negative feedback? - ANSWERS -Maintenance of blood glucose levels.
How is systems thinking different from traditional thinking? - ANSWERS -Traditional scientific
approach = isolating small parts of the system.
,Systems thinking = taking many interactions into account.
Renewable Resource - ANSWERS -Can be replenished fairly rapidly as long as it is not used faster
than it can be replaced. Forests, grasslands, wildlife, fresh air and water, and fertile soil .
Environmental Degridation - ANSWERS -When natural replacement rate is exceeded.
Biological Footprint - ANSWERS -The amount of biologically productive land and water needed
to supply an area with resources and to absorb the wastes and pollution produced from such
resource use.
IPAT Model - ANSWERS -Impact = Population x Affluence x Technologies. Widely used
simplification of the factors causing environmental degradation.
Why will smog continue to be a global health problem? - ANSWERS -Human affluence
What contributed to the ban of chlorofluorocarbons in over 100 countries? - ANSWERS -
Chlorofluorocarbons react with ozone (O3) to form oxygen (O2), which has resulted in a hole in
the ozone layer of Earth.
Primary consumers ONLY get energy from primary producers. - ANSWERS -True.
Ecosystems consist of: - ANSWERS -Biological, chemical, and physical parts of the environment.
Oligotrophic lakes have: - ANSWERS -Low productivity. Nutrient-poor, having a small amount of
organic matter and low productivity.
Eutrophic lakes have: - ANSWERS -High productivity. Nutrient-rich, having plentiful organic
matter and high productivity
, In rivers, production is primarily completed by algae within the river; this is called: - ANSWERS -
Autochthonous production
Represents a conflict between economic development and ecosystem quality: - ANSWERS -
Adding large quantities of fertilizer to farmland increases the amount of food grown, but it also
introduces pollutants into nearby water supplies
Groundwater often provides support for the ground above it. - ANSWERS -True
Groundwater is available year-round, unlike some surface water sources. - ANSWERS -True
Groundwater is often cheaper to extract than surface water. - ANSWERS -True
What is the main cause of the increase in water use due to people having more income to
spend? - ANSWERS -People with more financial resources tend to increase their consumption of
meat, which is water-intensive to produce.
Sustainable agriculture uses less water than industrial agriculture. - ANSWERS -True
Compared to industrial agriculture, sustainable agriculture reduces the likelihood of a disease
destroying an entire crop. - ANSWERS -True
Compared to industrial agriculture, sustainable agriculture requires less human labor. -
ANSWERS -False
Sustainable agriculture always leads to higher farm productivity than industrial agriculture. -
ANSWERS -False