term test 2 Flashcards
learn a ton of shit
what is demography
the study of the size, composition, and distribution of human population
what is an aquifer
an underground layer of rock that holds groundwater
freshwater ecology is also called….
limnology
Describe environmental flows
the quality, quantity, and timing of water flows to maintain the components, functions, processes, and resilience of aquatic ecosystems which provides goods and services to people
list some disadvantages of using damns and reservoirs
large loss of water due to evaporation, migration and spawning of some aquatic life is disrupted
list some advantages of using damns and reservoirs
useful for recreation and fishing, can produce cheap electricity (hydropower)
what are the main diseases transmitted through contaminated drinking water
bacteria, viruses, parasitic protozoa, parasitic worms
what is the leading cause of water pollution
agriculture
what type of body of water is most subject to pollution
lakes due to low mixing and low flow
what is cultural eutrophication
the process that speeds up natural eutrophication because of human activity
define eutrophication
when a body of water becomes overly concentrated with minerals and nutrients causing excess growth of plants and algae
describe energy return on investment
it is a measure of the inputs of energy required to generate energy, expressed as a ratio
describe energy driven complexity
refers to the consumption of increasing amounts of energy to drive increasingly complex systems such as modern food production systems
describe food miles
refers to the distance travelled by food items or components from where they originated as agricultural products to where they are consumed as food products
describe energy generation
refers to the creation or renewal of the ability to produce action
