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Chapter 1 Science

Science-Chapter 1 Vocab

Vocab. WordDefinition
Birth Rate The number of births per 1,000 individuals for a given time period.
Death Rate The number of deaths per 1,000 individuals for a given time period.
Immigration Moving into a population.
Emigration Moving out of a population.
Population Density The number of individuals in an area of a specific size.
Limiting Factor An environmental factor that causes a population to stop growing or decrease in size.
Carrying Capacity The largest population an area can support.
Natural Selection The process by which organisms that are best adapted to their environment are most likely to survive and reproduce.
Adaptations An inherited behavior or physical characteristic that helps an organism to survive and reproduce in its environment.
Niche How an organism makes its living and interacts with the biotic and abiotic factors in its habitat.
Competition The struggle between organisms to survive as they attempt to the same limited resources in the same place at the same time.
Predation An interaction in which one organism kills another for food or nutrients.
Predator The organism that does the killing in a predation interaction.
Prey An organism that is killed and eaten by another organism in a predation interaction.
Symbiosis Any relationship in which two species live closely together and that benefits at least one of the species.
Mutualism A type of symbiosis in which both species benefit from living together.
Commensalism A relationship in which 1 species benefits and the other is neither helped or harmed.
Parasitism A relationship in which 1 species lives with ,on ,or inside another species causing it harm.
Host The organism that in which the parasite lives on or in.
Succession The series of predictable changes that occur in a community over time.
Primary Succession The series of changes that occurs in an area where no soil or organisms exist.
Pioneer Species The first species to populate an area.
Secondary Succession The series of changes that occurs in an area where the ecosystem has been disturbed, but where soil and organisms still exist.
Created by: zjo201027171



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