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vocabulary chp 4.1
| Question | Answer |
|---|---|
| ecology | is the study of how organisms interact with each other and with their environments |
| species | is a group of individuals that interbreed and produce fertile offspring |
| population | members of a species that live in the same area at the same time make up a ..... |
| community | all off the populations in a particular area make up a .... |
| ecosystem | includes all of the living things and their physical environments within a particular area |
| biosphere | includes all parts of earth that host life with all of its organisms and environments |
| biotic factors | parts of an ecosystem that are living or used to be living are called... |
| abiotic factors | parts of en ecosystem that have never been living are .... |
| habitat | the specific environment in which an organisms lives is its .. |
| resources | is anything an organisms needs including nutrition shelter breeding sites and mates |
| population size | describes the number of individuals organisms present In a given population at a given time |
| population density | describes the number of individuals within a population per unit area |
| population distribution | sometimes called population dispersion describes how organisms are arranged within an area |
| age structure | or age distribution the relative numbers of organisms of each age within a population |
| age structure diagrams | are visual tools scientists use to show the age structure of populations |
| sex ratio | is its proportion of males to females |
| survivorship curves | to show how the likelihood of death varies with age population ecoclogist use graphs called.. |
| immigration | is the arrival of individuals from a outside a given area |
| emigration | is the departure of individuals from a given area |
| migration | is a seasonal movement into and out of an area |
| exponential growth | when a population increases by a fixed percentage each year it is said to undergo |
| limiting factors | are characteristics of the environment that limit population growth |
| carrying capacity | is the largest population size a given environment can sustainably support |
| logistic growth | describes how a population initial exponential increase is slowed and finally stopped by limiting factors |
| density dependent factor | because its influence changes with population density |
| density independent factors | are limiting factors whose influence is not affected by population density |
| biotic potential | organisms different in their ..... or maximum ability to produce offspring in ideal condition |
Created by:
braulio12345