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APES Midterm
n/a
54
Environmental Studies
11th Grade
01/13/2011

Additional Environmental Studies Flashcards

 


 

Cards

Term
Adaption
Definition
Any genetically controlled structural, physiological or behavioral characteristic that helps an organism survive and reproduce under a given set of environmental conditions. Usually results from a beneficial mutation.
Term
Adaptive Radiation
Definition
Process in which numerous new species evolve to fill vacant and new ecological niches in changed environments, usually after a mass extinction. Typically takes millions of years.
Term
Alleles
Definition
Slightly different molecule form found in a particular gene
Term
Artificial Selection
Definition
Process by which humans select one or more desirable genetic traits in the population of a plant or animal species and then use selective breeding to produce populations containing many individuals with the desired traits.
Term
Background Extinction
Definition
Normal extinction of various species as a result of changes in local environmental conditions.
Term
Biological Evolution
Definition
Change in the genetic makeup of a population of a species in successive generations. If continued long enough, it can lead to the formation of a new species. Populations  (not individuals) evolve.
Term
Biopharming
Definition
Use of genetically engineered animals to act as bio-factories for producing drugs, vaccines, antibodies, hormones, industrial chemicals such as plastics and detergents, and human body organs
Term
Chemical Evolution
Definition
Formation of the earth and its early crust and atmosphere, evolution of the biological molecules necessary for life, and evolution of systems of chemical reactions needed to produce the first living cells. Occurred one million years prior to biological evolution
Term
Coevolution
Definition
Evolution in which two or more species interact and exert selective pressures on each other that can lead each species to undergo various adaptations.
Term
Differential Reproduction
Definition
Phenomenon in which individuals with adaptive genetic traits produce more living offspring than do individuals without such traits.
Term
Ecological Niche
Definition
Total way of life or role of a species in an ecosystem. It includes all physical, chemical, and biological conditions a species needs to live and reproduce in an ecosystem.
Term
Extinction
Definition

Complete disappearance of a species from the earth. This happens when a species cannot adapt and successfully reproduce under new environmental conditions or when it evolves into one or more new species.

Term
Fossils
Definition
Skeletons, bones, shells, body parts, leaves, seeds, or impressions of such items that provide recognizable evidence of organisms that lived long ago.
Term
Fundamental Niche
Definition
The full potential range of the physical, chemical, and biological factors a species can use if there is no competition from other species.
Term
Gene Pool
Definition
The sum total of all genes found in the individuals of the population of a particular species.
Term
Generalist Species
Definition
Species with a broad ecological niche. They can live in many different places, eat a variety of foods, and tolerate a wide range of environmental conditions. (flies, human beings)
Term
Genetic Engineering
Definition
Insertion of an alien gene into an organism to give it a beneficial genetic trait
Term
GMO's
Definition
Organism whose genetic makeup has been modified by genetic engineering
Term
Geographic Isolation
Definition
Separation of populations of a species for long times into different areas
Term
Habitat
Definition
Place or type of place where an organism or population of organisms lives
Term
Macroevolution
Definition
Long-term, large-scale evolutionary changes among groups of species
Term
Mass Depletion
Definition
Widespread, often global period during which extinction rates are higher than normal but not high enough to classify as mass extinction
Term
Mass Extinction
Definition
A catastrophic, widespread, of global even in which major groups of species are wiped out over a short time compared with normal (background) extinctions.
Term
Microevolution
Definition
The small genetic changes a population undergoes
Term
Mutations
Definition
A random change in DNA molecules making up genes that can yield changes in anatomy, physiology, or behavior in offspring
Term
Mutations
Definition
A random change in DNA molecules making up genes that can yield changes in anatomy, physiology, or behavior in offspring
Term
Natural Selection
Definition
Process by which a particular beneficial gene (or set of genes) is reproduced in succeeding generations more than other genes. The result of natural selection is a population that contains a greater proportion of organism better adapted to certain environmental conditions
Term
Productive Isolation
Definition
the second phase of Allopatric speciation. Occurs when mutation and natural selection operate independently in the gene pools of two geographically isolated populations
Term
Realized Niche
Definition
Parts of the fundamental niche of a species that are actually used by that species
Term
Theory of Evolution
Definition
Widely accepted scientific idea that all life forms developed from earlier life forms
Term
Speciation
Definition
Formation of two species from one species because of divergent natural selection in response to changes in environmental conditions; usually takes thousands of years
Term
Rachel Carson
Definition
Wrote Silent Spring in 1962, warned against pesticides, led to ban on DDT
Term
Theodore Roosevelt
Definition
First national park
Term
John Muir
Definition
Established the Sierra Club 1892
Term
System
Definition
Set of components that function and interact in some regular and theoretically understandable manner
Term
Input
Definition
Matter, energy, or information entering a system
Term
Output
Definition
Matter, energy, or information leaving a system
Term
Flows
Definition
Flow of matter, energy, or information through a system
Term
Positive Feedback Loop
Definition
Causes a system to change further in the same direction
Term
Negative Feedback Loop
Definition
Causes a system to change further in the opposite direction
Term
Synergy
Definition
Interaction of two or more factors or processses so that the combined effect is greater than the sum of the two effects
Term
Exponential Growth
Definition
Growth doubling, yo
Term
GIS
Definition
Geographic Information System, Used it to look at environmental issues and map them
Term
Earth Day
Definition
April 22, 1970
Term
Levels of Organization
Definition
Organisms, population, communities, ecosystems, ecosphere
Term
Ecotone
Definition
Transition zone in between ecosystems
Term
Eveness
Definition
abundance of species
Term
Richness
Definition
number of species
Term
Nitrate
Definition

The form of Nitrogen most usable to plants

Term
Interspecific
Definition
attempts by members of two or more species to use the same limited resources in an ecosystem
Term
Intraspecific
Definition
Attempts by two or more organisms of a single species competing for a single limited resource
Term
K-Strategist
Definition
Species that produce few, not often, better parents
Term
R-strategist
Definition
species that produce early in their life and produce a lot , short lived
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