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| In an area defined by an ecologist, the set of relationships between populations of species and between those populations and the abiotic (non-living) factors in their environment. |
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| A species that is close to extinction. |
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| A step-by-step sequence linking organisms that feed on each other starting with a food source, such as a producer or detritus, and continuing with a sequence of consumers. |
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| An autotroph; an oranism that uses photosynthesis or another form of chemical synthesis to make food. |
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| A heterotroph; an organism that must eat producers or other comsumers to survive. |
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| an animal that eats plants |
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| an animal that feeds on other animals |
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| an animal that eats both plants and animals |
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| waste from plants and animals, including their dead remains |
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| an organism that feeds on detritus, in the process releasing nutrients to the soil and water, where they can be used by oher organisms. |
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| a species that no longer exists on Earth |
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| a species that no longer exists in one part of a range |
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| a species that is likely to become endangered if factors that mke it vulnerable are not reversed |
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1. asteroids hitting erath
2.climate changed or pressure of competition
3.human activites
4.global warming
5.expansion of agriculture |
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| the number of species in an ecosystem, and the variety within those species. |
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| what are the three values of wolves? |
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1.the frontier view
2.the stewardship view
3.the ownership view |
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| what is the frontier view? |
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| man is more important than animals |
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| what is the stewardship view? |
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| man is more intelligent, we must take care of all species. |
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| what is the ownership view? |
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| man does not own the animals, leave them be. |
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| an organism that people consider harmful or inconvinient in a particular situation, such as weeds and some inscets, fungi and rodents |
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| the study of the interaction of living things with each other and with abiotic (non- living) factors in their environment |
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factor in an ecosystem created by non-living agents
ex) wind direction, temp, sunlight |
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| a factor in an ecoystem created by the pressence and roles of other living things |
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| all of the members of a species living in an ecosystem or habitat. |
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| the collection of all the populations of all the species in an ecosystem; all of the organisms in an ecosystem |
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| the process by which green plants and some other organismsuse sunlight energy, carbon dioxide, and water to produce carbohydrates (sugars and oxygen) |
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| a measurement of the percentage of light that an object reflects; the higher the albedo, the greater the objects ability to reflect sunlight |
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| the transfer of energy by means of waves that do not require a medium |
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| a way of catergorizing living things according to how they gain their energy; the first trophic level contains autotrophs, and each higher level contains heterotrophs |
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| an organism that uses energy and raw materials to make its ouwn food, whether from photosynthesis or some other form of chemical synthesis; a producer |
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| in a food chain or food web, an organism that relies on autotrophs directly for its source of energy; organisms at the second trophic level |
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| in a food chain of web, and organism that relies on primary consumers for its principal sourse of energy; organisms at the third trophic level |
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| an organism that is incapable of making its won food, and so much feed on other organisms to gain energy |
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