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33 Cards in this Set

  • Front
  • Back
three unifing themes
stewarship, sound science, and sustainability
six elements that are essential to living organisims
Nitrogen, carbon, hydrogen, oxygen, phosphorus and sulfur
s curve
Natural things come in the way and cause population to level and hit an equilibrium.
j curve
the point when there are no natural predators ussually resulting in over grazing then dying of starvation or diesies
Primary succesion
An area that is not previously occupied. the are initial invasion, progression from biotic community. moss on rock
secondary succesion
a re invasion of a biotic community that was destroyed by things like fire or humans. Steps are crab grass, tall grass, pines, pine forest ext...
adaptions wich support survival
1.) coping with climate and abiotic factors
2.)Adapting to obtain water and nutrients
3.)Adaption against predators
4.)Adaption of reproductive advantage
5.)Adaption for migration
natural selection ands relate it to a species
survival og the fittest- darwin
population profiles
infant mortality rate
replacement fertility rate
give the age structure of populations.
organisms that derive their energy from feeding on other organisms or their products
within a population the more successful reproduction of certain individuals compared with that of others
gene pool
the sum total of all the genes that exist among all the individuals of species
the practice of growing the same crop year after yearon the same land
the growing of two or more species together
the breeding of cetain individuals because they bear certain traits and the exclusion from breeding of others
the evolutionary process whereby populations of a single species separate and through being exposed to different forves of natural selection,gradually develop into distinct species
any physical or behavioral characteristic or talent that an individual is born with
an animal that feeds on both plant material and other animals
any organism that can synthesize all its organic substances from inorganic nutrients using light or certain inorganic chemicals as a source of energy. green plants are the principal autotrophs
the transition of a population from a condition of a high birthrate and a high death rate to a condition of a low birthrate and a low death rate.may result from economicor social development
developed/industrialized countries
US,Canada,western european nations, japan, australia,and new zealand, in which the gross domestic product exceeds $9,360 per captia
the diversity of living things found in the natural world. the concept usually refers to the different species but also includes ecosystems and the genetic diversity within a given species
the sum total of all living organisms. applied to the setting of natural ecosystems
pertaining to factors or things that are separate and independent from living things;non living
biotic potenial
reproductive capacity. the potential of a species for increasing its population and/or destribution.every species is such that,given optimum conditions, its poplulation will increase
organisms whose feeding action results in decay or rotting or organic material. the primary decomposers are fungi and bacteria
the death of all individuals of a particular species. when this occursall the genes of that particular lline are lost forever.
a random change in one or more genes of an organism. mutations may occur spontaneously in nature, but their number and degree are vastly increased by exposure to radication or certain chemicals. mutations generally result ina physical deformity or metabolic malfunction
in an ecosystem those organisms which use light engery to construct their organic constituents from norganic compounds
huge slabs of rock that make up Earth's crust
an animal that feeds more or less exclusively on other animals
infant mortality
the number of babies that die before one year,per
1,000 babies born
total fertility rate
the average number of children that would be born alive to each woman during her total reproductive years if her fertility was average at each age