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Environmental Science Chapter 5
Terms in this set (35)
Change in a kind of organism over time; process by which modern organisms have descended from ancient organisms.
a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.
a random error in gene replication that leads to a change
A change in the gene pool of a population due to chance
A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.
how well an organism can survive and reproduce in its environment
inherited characteristic that increases an organism's chance of survival
Selection by humans for breeding of useful traits from the natural variation among different organisms
the formation of new and distinct species in the course of evolution.
A term that typically describes a species that no longer has any known living individuals.
Full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions
the ability to be able to adapt to your environment
the differentiation of niches that enables similar species to coexist in a community
An interaction in which one organism captures and feeds on another organism
the influence of closely associated species on each other in their evolution.
A relationship in which one organism lives on or in a host and harms it.
A relationship in which two different organisms live in close association with each other
interaction in which one animal (the herbivore) feeds on producers (such as plants)
A relationship between two species in which both species benefit
A relationship between two organisms in which one organism benefits and the other is unaffected
the first producers of energy-rich compounds that are later used by other organisms
Conversion of light energy from the sun into chemical energy.
process in which chemical energy is used to produce carbohydrates
An organism that obtains energy and nutrients by feeding on other organisms or their remains.
Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen
Consumers that eat only animals
eat both plants and animals
feed on plant and animal remains and other dead matter
An organism that breaks down wastes and dead organisms
Each step in a food chain or food web
total amount of living tissue within a given trophic level
A series of steps in which organisms transfer energy by eating and being eaten
A community of organisms where there are several interrelated food chains
a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
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