Ecology 1
Terms
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- biosphere
- thin layer of life that surrounds the earth
- producer
- an organism that makes its own food
- natural resources
- any natural substance that living things use
- climax community
- a stable mature community
- ecosystem
- ecological units that include all the different organism living in a certain area along with their physical environment
- species
- organism that can mate and produce fertile offspring
- commensalism
- a relationship that exist between two organism in which one organism benefits from the realtionship and the other is neither harmed nor helped.
- primary succession
- succession that occurs in an area for the first time
- decomposer
- organisms that feed on dead decaying organisms that allows nutrients to be placed back in the ecosystems
- consumption crisis
- A situation in which resources are being used faster than they can be replenished
- predation
- a relationship where one organism kills and eats another
- abiotic factor
- non-living parts of an environment
- succession
- regular pattern of changes over time in the types of species in a community
- parasitism
- relationship between a parasite and its host
- evolution
- changes that occur within a species over time
- natural selection
- belief that organism within a population that have trait that suit their environment will survive and therefor pass on their genes to the next generation
- co-evolution
- type of evolution in which two organisms evolve in response to each other
- sustainable world
- a world in which human populations can continue to exist indefinitely with a high standard of living and health
- renewable resource
- resource that can be replenished is used wisely
- organism
- any living thing
- developing
- a less industrialized county in which the citizens have a low average income
- competition
- a relationship that exist between organism in which they compete over the same limited resources
- consumer
- organisms that rely on other organims for the energy needs (food)
- nonrenewable resource
- resources that can not be replaced once they are used.
- biotic factors
- living parts of the environment
- food chain
- sequence in which energy is transferred from one organism to the next
- extinction
- the irreversable disappearance of a population or a species over time.
- precipitation
- rain, sleet, snow
- herbivore
- an organism that eats producers only
- prey
- organism that is being killed by a predator
- population
- groups of organisms of the same species living together
- water cycle
- the natural movement of water between the earths surface and the atmosphere
- parasite
- an organism that feeds or lives off another organism
- pioneer
- the first organisms to colonize any newly available area and start the process of succession
- community
- a group of populations interacting and living together
- mutualism
- a relationship that exists between two organism in which both organism benefit from that relationship
- developed
- A type of country that is highly industrialized and whose citizens have a high average income
- nitrogen-fixing bacteria
- organism that can use nitrogen gas directly from the atmosphere.
- niche
- way in which an organism lives
- omivore
- an organism that eats producers and consumers
- carnivore
- organism that feeds exclusivley on heterotrophs
- ecology
- study of how living things interact with each other and with their non-living environment
- adaptations
- characteristics that organisms posses that make them successful in their environment.
- cellular respiration
- process in which organism break down food to relsease energy
- population crisis
- Occurs when the human population is growing to quickly for the region to support
- environmental science
- the study of how human interact with their environment
- predator
- an organism that hunts and kills another organism
- environment
- everything that surrounds us
- host
- organism that is used by a parasite
- food web
- illustration that shows all the feeding relationships in an ecosystem
- secondary succession
- succession that occurs where an ecosystem previously existed
- habitat
- place where an organisms lives
- trophic level
- each step in the transfer of energy through an ecosystem