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chapter 5/

TermDefinition
Evolution A general term, means "change over time".
Gene A sequence of DNA that codes for a particular trait.
Mutations changes in DNA
Genetic drift biological evolution that occurs by chance.
Natural selection The process by which traits that improve an organism's chances for survival and reproduction are passed on more frequently to future generations than those that do not.
Fitness describes how re productively successful an organism is in its environment.
Adaption A heritable trait that increases an individual's fitness.
artificial selection process of selection conducted under human direction.
Speciation The process by which new species are generated.
Extinction the disappearance of a species from Earth.
niche describes its use of resources and its functional role in a community.
Tolerance the ability to survive and reproduce under changing environmental condition.
Resource partitioning the species partition or divide the resource they use in common by specializing in different ways.
Predation the process by which an individual of one species a predator, hunts, captures, kills and consumes an individual of species ,the prey.
Coevolution The process by which two species evolve in response to changes in each other.
Parasitism a relationship in which one organism, the parasite, depends on another, the host, for nourishment or some other benefit.
Symbiosis a long-lasting and physically close relationship in which at least one organism benefits.
Herbivory The interaction in which an animal feeds on a plant.
Mutualism A relationship in which two or more species benefit.
Commensalism a relationship in which one species benefits and other is unaffected.
Primary producers capture energy from the sun or from chemicals and store it in the bonds of making Sugars.
photosynthesis the process by which primary producers use sunlight to carbon dioxide and water into sugars.
chemosynthesis primary producers such a as bacteria use energy stored in the bonds of hydrogen sulfide to convert carbon dioxide and water into sugars.
consumers organisms that rely on other organisms for energy and nutrients.
cellular respiration the process by which organism use oxygen to release the chemical energy of sugars such as glucose release carbon dioxide and water into sugar
herbivores organisms that consume producers are known as primary consumers.
carnivores most secondary and tertiary consumers that kills and eats other animals.
omnivores animals that eat both plants and animals.
Created by: TaeTae16
 

 



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