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B- Unit 7 Lesson 2

How Resources Affect Evolution

TermDefinition
adaptation any trait that can be passed on to subsequent generations that increases the organisms' ability to survive in its environment and reproduce more often
competition when organisms living in the same community use the same limited resources, but those resources are not enough to fill the needs of every individual organism
intraspecific competition competition between two or more individuals of the same species
interspecific competition competition between two or more individuals of different species
direct competition competition between two or more individuals where the individuals fight one another for the same resource
indirect competition competition between two or more individuals where the individuals use the same resource but do not interact with each other directly
fitness how well an individual survives and produces offspring in its environment
natural selection the process that results in an organism having favorable adaptations to its environment, which are passed on through reproduction, thus changing the genetic makeup of future generations
struggle for existence the competition for vital resources between members of a population
gene flow the transfer of genes from one population to another due to the migration of individuals into or out of a population
apex predator a predator that has no predator that preys upon it in an ecosystem
Created by: atrang
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