Chapter 1 Populations and Communitites

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Can you name the Chapter 1 Key Terms?

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The role of an organism in its habitat
Any relationship in which two species live closely together and at least one of the species benefits
An interaction in which one organism kills another for food
Behaviors and physical characteristics that allow organisms to live successfully in their environments
If birth rate > death rate, population size will _____. (increase or decrease)
The largest population that an area can support
If death rate > birth rate, population size will _____. (increase or decrease)
Organism that is killed and eaten as food
Organism that benefits in a parasitic relationship
A symbiotic relationship in which both species benefit
The nonliving parts of a habitat
A symbiotic relationship in which one organism benefits and the other is harmed
A symbiotic relationship in which one species benefits and the other species is neither helped nor harmed
The study of how organisms interact with each other and with their environment
The struggle between organisms to survive as they attempt to use the same limited resources
All the different populations that live together in an area
An environmental factor that causes a population to stop growing or decrease in size
Organism that is harmed in a parasitic relationship
All the members of one species living in a particular area
An environment that provides the things a specific organism needs to live, grow, and reproduce
Leaving a population
The living parts of a habitat
Organism that kills other organisms for food
A living thing
Moving into a population
The community of organisms that live in a particular area, along with their nonliving environment
Process in which adaptations become more common in a species
A group of organisms that can mate with each other and produce offspring that can also mate and reproduce

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