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| the study of an organism interation with their enviorment |
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| ecologists may study how one organism meets the challenges of its enviorment |
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| ecologists study the factors that limit a populations size |
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| ecologists might focus on interspecies relationships |
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| ecosystem interactions include.... |
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| living (biotic) communities and nonliving (abiotic) and chemical factors |
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total of all the earths ecosystems - global ecosystems |
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| what characterizes the biosphere |
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| patchiness of the enviorment |
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famous ecologists- was one of the first who previeced the global dangers of pesticide use |
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| abiotic factors that determine the biospheres structures |
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| solar energy, water, temperature, wind, and disturbances |
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determines the distrubution of biological communities - due to uneven heating of the Earths surface as it orbits the sun |
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| causes the changes of the seasons in the northern and sourther atmospheres |
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| uneven heating of the earth |
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Definition
| sets of patterns of parcipitation and pervailing winds |
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| landforms like moutains affect |
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oceans occupy the earths surface are affected by light, distance from shore, and availiabiility of nutrients |
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| what is the area of shore where the ocean meets the land |
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| what are the zones of the ocean |
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intertidal- where ocean meets shore photic zone- 0-200 m below surface benthic-200m and down to floor |
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made mostly of skeletans of fish - found in warm waters and above continital shelf |
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| are productive areas where rivers flow into oceans |
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| lakes,ponds,rivers,streams, and wetlands |
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| what affects freshwater biomes |
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Definition
| light, temperature and the availiability of nutrients and dissolved oxygen |
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| what changes from the source of a river to its mouth |
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| abiotic factors which cause communities of vary accordinally |
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| includes marshes and swamps |
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reflect regional vriations - temperature and rainfall- miainly determines terrestrial biomes |
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cluster near the equator - most diverse ecosystem |
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grasslands scattared with trees - are dry and warm |
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defined by its dryness - dryest biome |
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spiny shrubs dominate is a shrubland with cool, rainy winters, and hot dry summers |
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include the north amerian prarie are found where winters are cold |
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dominate temperate forests - grow throughout midlatitude regions because there is a sufficient moisture to support growth of trees |
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often dominated by a few species of trees also called traiga found where there are short summers and long snowy winters |
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is a treeless biome characterized by extreme cold wind and permafrost |
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occurs above the treeline on high montains |
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| where an area us heated directly by sunand moist air at the equator rises creating an area of calm or of very light winds |
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| region between latitudes 23.5 degrees north and 23.5 degrees south this area revieces the greatest annual input and least seasonal variation in solar radiation |
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the latitudes between the topics and the arctic circle in the north ad the antarctic circles in the south |
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| as the dry air descends some of it spreads back toward the equator this movement creates the cooling winds called trade winds |
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resulf from the combined effects of the rising and falling of air masses and earths rotation - major glbal air movements |
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us produced by temperate zones the slower moving surface produce them - winds that blow from west to east |
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a combination o fthe prevailing winds the planets rotation unequal heating of surface water ad the locationand shapes of the continents decreases which creates the ocean currents -river like flow patterns in teh oceans |
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