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First Term Exam
N/a
36
Environmental Studies
Undergraduate 1
12/10/2010

Additional Environmental Studies Flashcards

 


 

Cards

Term
Interdisciplinary
Definition
one that employs concepts and techniques from numerous disciplines and brings research results from these disciplines together into a broad synthesis
Term
Sustainability Development
Definition
Use of resource to satisfy current needs without compromising future availability
Term
Natural Selection
Definition
traits that enhance survival and reproduction continue in population
Term
Adaptation
Definition
a trait that promotes reproductive sucess
Term
Mutations
Definition
An error in the DNA that may surpass in the offsprings
Term
Directional Selection
Definition
Drives a feature in one direction
Term
Stabilizing Selection
Definition
Extremes are selected against
Term
Disruptive Selection
Definition
trait diverge in two or more directions
Term
Artificial selection
Definition
conducted under human direction
Term
Adaptive selection
Definition
a burst of species diversification that occurs in response to environment change
Term
Species
Definition
members can produce fertile offspring
Term
Population
Definition
a group of individuals of a species that live in the same area
Term
Allopatric speciation
Definition
species formation due to physical separation
Term
Sympatric speciation
Definition
populations becomes reproductively isolated within the same area
Term
Endemic Species
Definition
species with a small geographic distribution
Term
Small population
Definition
lack genetic diversity
Term
Population ecology
Definition
quantitative dynamics of populations
Term
Community Ecology
Definition
Interactions among species
Term
Habitat
Definition
the environment in which an organism lives
Term
Niche
Definition
an organism's use of resources and its functional role in a community
Term
Fundamental Niche
Definition
optimal niche --> unlimited resources
Term
Realized Niche
Definition
a subset of fundamental niche due to species interactions--> more competition
Term
Population Density
Definition
the number of individuals within a population
Term
Major Earth Spheres
Definition
Biosphere, Atmosphere, Geosphere and Hydrophere
Term
Isolated System
Definition
neither nor energy can be exchanged across the boundaries
Term
Closed System
Definition
energy can be exchanged across the boundaries, but matter cannot
Term
Open system
Definition
Both matter and energy can be exchanged
Term
Dynamic Equilibrium
Definition
system process balancing, constantly changing and interactions
Term
Homeostasis
Definition
system tends to maintain stable internal conditions
Term
Emergent Properties
Definition
system characteristics not evident in components on their own
Term
Cycle
Definition
a system of two or more connected reservoirs that transfers matter and energy
Term
Crop Rotation
Definition
alternation the crops grown field from one season or year to the next
Term
Contour Farming
Definition
plowing furrows sideways across a hillside
Term
Terracing
Definition
level platforms are cut into steep hillside, forming "staircase" to contain water
Term
Monoculture
Definition
large expanse of a single crop
Term
Transgenic
Definition
an organisim that contains DNA from another species. And the genes that have been moved between them.
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