Term
| What is the difference between an ecosystem and an ecological community |
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Definition
| the non-living components of the env. |
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Term
| An ecological community is |
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Definition
| a set of interacting species that occur in the same place |
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Term
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Definition
| is the smallest system that includes and sustains life |
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Term
| What does the simplest ecosystem need to function properly |
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Definition
| one species that produces its own food, and a second that decomposes the waste of the first one, plus water and air |
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Term
| The most basic processes in an ecosystem are |
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Definition
| flow of energy and cyling of chemical elements |
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Term
| Energy, chemical elements, and other compounds are transferred from creature to creature along: |
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Definition
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Term
| Autotrophs at the first trophic level get their food from: |
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Definition
| inorganic chemicals and sunlight |
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Term
| when a species has a large effect on its community or ecosystem it is called |
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Definition
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Term
| A city park would be an example of: |
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Definition
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Term
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Definition
| Omnivores and feed on several trophic levels of a food chain |
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Term
| Three characteristics of Ecosystems |
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Definition
1. Structure
2. Processes
3. Change |
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Term
| Two basic kinds of processes that must occur in an ecosystem |
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Definition
| chemical elements must cycle and energy must flow |
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Term
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Definition
| it is the linkage by which energy, chemical elemnts and some compounds are transferred from species to species |
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Term
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Definition
| organisms in the first trohpic level, which make their own food and inorganic chemicals and a source of energy |
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Term
| on what trohpic level would carnivores that feed directly on herbivores be found |
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Definition
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Term
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Definition
| the perception that an ecological commnity is more than the sum of its parts |
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Term
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Definition
| species that are most abundant or otherwise most important in an ecological community |
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Term
| The processes responsible for formation and change of Earth's materials are collectively known as the |
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Definition
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Term
| What are the four important subcycles that consicts the geolofic cycle |
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Definition
1. rock
2. hydrologic
3. tectonic
4. biogeochemical |
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Term
| The hydrologic cycle refers to the recycling of |
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Definition
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Term
| What element is part of an important biogeochemical cylce? |
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Definition
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Term
| In the contect of biochemical cycles "flux" refers to: |
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Definition
| the transfer of material or energy from one reservoir to another |
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Term
| the world's richest phosphate mine is located near |
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Definition
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Term
| What are the big six macronutrients |
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Definition
carbon
hydrogen
nitrogen
oxygen
phosphorus
sulfur |
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Term
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Definition
| the process of converting inorganic, molecular nitrogen in the atmostphere to ammonia or nitrate |
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Term
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Definition
| the presence of sunlight and chlorophyll, carbon dioxide and water are converted to a simple sugar |
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Term
| People have and have had in the past, great influence on the biological diversity in their surrounding env. as a result of |
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Definition
- hunting
- habitat destruction
- introduction of non-native species
- pollution of the environment |
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Term
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Definition
| Can result in a new species |
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Term
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Definition
| Are made of deocyribonucleic acid |
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Term
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Definition
| the change of inherited characteristics of a population |
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Term
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Definition
| the interaction of two species to benefit both |
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Term
| ecological gradient refers to |
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Definition
| change in the relative abundance of a species over an area |
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Term
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Definition
| an association between two organisms, A and B, in which organism A lives on, in or with organism B and depends on B for existence but makes no useful contribution to B |
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Term
| What four processes lead to biological evolution |
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Definition
1. Mutation
2. natural selection
3. migration
4. genetic drift |
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Term
| How does migration affect biolocial evolution |
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Definition
| the migration of one population of a species into a habitat previously occupied by another population of that species can lead to changes in gene frequency |
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Term
| What three main concept make up biological diversity |
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Definition
1. Genetic diversity
2. Habitat diversity
3. Species diversity |
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Term
| What two factors influence species diversity |
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Definition
1. the relative chance of seeing a particular species
2. the number of species present |
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Term
| What are the three basic types of species interaction |
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Definition
1. competition
2. symbiosis
3. predation-parasitism |
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Term
| Natural Selection and Mosquitoes |
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Definition
| The early fight against malaria, the fact that mosquitoes and plasmodium became resistant to DDT and chloroquine, respectively, is an example of natural selection |
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Term
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Definition
| geographic distribution of living oranisms |
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Term
| Some things thought to be major biomes of the earth |
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Definition
benthos
freshwater
deserts
wetlands |
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Term
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Definition
| a small habitat that is separated from the major part of that habitat on a continent or a region |
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Term
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Definition
| a species that is native to a particular location and not native elsewhere |
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Term
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Definition
| the dominant freshwater plants in the fresh water biome |
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Term
| What is the primary output of food to the benthos |
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Definition
| Dead organic matter that falls from above |
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Term
| The two kinds of tundra are |
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Definition
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