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Definition
| All the parts of the planet that are inhibited by living things |
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Definition
| A community of living things and the non living features of the environment needed for their survival |
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| Anything that can independently carry out life processes. |
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| A membrane-bound structure that is the basic unit of life. |
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| Deoxyriibonucleic acid; the hereditary material that controls all the activities of a cell, contains the information to make new cells, and provides instructions for making proteins. |
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Definition
| A segment of DNA that carries the hereditary instructions for producing a protein. |
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| An organism that makes its own food using energy inlight or a chemical reaction |
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| An organism that must eat other living things to provide its food energy. |
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| A type of consumer that breaks down waste and/or dead organisms to provide its food energy. |
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Definition
| A map of energy flow that shows what organisms eat what in an ecosystem. |
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Definition
| A more complete map of energy floow that shows all of the various food chains in an ecosystem and how they are related. |
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Definition
| The scientific study of the interactions among organisms and between organisms and their enviroment |
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Term
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Definition
| All the parts of the planet that are inhibited by living things. |
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Definition
| Any living part of an ecosystem. |
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Definition
| Any non-living component of an ecosystem. |
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| A group of organisms of the same species living in the same area at the same time. |
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Definition
| All the populations organisms living in an area. |
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| The specific environment in which an organism lives with all its characteristic abiotic and biotic factors. |
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Definition
| The average seasonal weather conditions for a given location |
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Definition
| A climate in a specific area that differs significantly from the climate of the surrounding region. |
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Definition
| A major type of terrestrial land ecosystem. |
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Definition
| Forest ecosystem near the equator that recieves as much as 250 cm of rainfall yearly. |
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| Grassland with scattered trees found in tropical regions. |
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Definition
| land area that recieves less than 30cm of rain a year. |
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Definition
| A temperate, coastal ecosystem dominated by dense green evergreen shrubs |
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Definition
| Ecosystem built on deep nutrient rich soil that supports a wide variety of grasses. |
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Definition
| A forest ecosystem in a temperate region characterized by trees and shrubs that drop their leaves each winter. |
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Definition
| A forest ecosystem dominated by cone-bearing evergreen trees, mostly found in northern latitudes. |
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Definition
| An ecosystem found above the arctic circle or on high mountains characterized by extreme cold, frozen subsoil, and high winds. |
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Definition
| Permanently frozen subsoil. |
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Definition
| The distrubution of individuals among different ages in a population. |
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Definition
| The number of births ocuring in a period of time. |
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Definition
| The number of individuals of a species that an ecosystem is capable of supporting for a long period of time. |
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Definition
| The number of deaths occuring in a population during a period of time. |
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Term
| Density-dependent factors |
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Definition
A limiting factor whose effect is related to the density of a population.
The higher the population density, the more strongly this factor limits population growth. |
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Term
| Density-independent Factor |
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Definition
| a variable that effects populationsize regardless of population density. |
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Definition
| The spatial distribution of indiviuals in a population. |
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Definition
The movement of individuals out of a population.
This decreases the population of an area without altering the death rate. |
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Definition
The movement of individuals into a population.
This increases the population without the birth of new individuals. |
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Definition
| How long, on average, an individual is expected to live |
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Definition
The number of individuals in a population in a given area at a specific time.
A measure of how crowded th population is. |
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Definition
| The graph of a species' mortality rate data distributed over the age of the individuals who die. |
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