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Alien species - Glossary of key terms
Alien species - Glossary of key terms

... A genetically-modified organism/living modified organism is a species whose genetic makeup has been purposefully altered by human technology. When the resulting organism is sufficiently different from its nearest relative to be considered a “new species”, then it can be considered an alien species. ...
AP Ecology HW 2012 current
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Feeding Relationships
Feeding Relationships

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Chp 12.1- Evidence for Continental Drift
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... • There were matching GEOLOGICAL FEATURES and rocks on DIFFERENT continents. • There were matching FOSSILS, like Mesosaurus, on different continents. ...
Continental Drift Theory and Plate Tectonics
Continental Drift Theory and Plate Tectonics

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... – Geographic study was aided (then and now) by other fields such as geology and botany. • During the 19th century, national censuses, trade statistics, and ethnographic studies gave firmer foundation to geographic investigation – By the end of the 19th century geography was respected and taught in u ...
Powerpoints
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Tortoise Tales
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... Allee effect Density-independent factors  Factors unaffected by population density  Examples include drought, hurricanes and floods Density-independent factor  Decline in the population of one of Darwin's finches (Geospiza fortis) on Galapagos Islands due to drought ...
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MCCA-MCGE
MCCA-MCGE

... stresses if they harbor many species rather than just one or a few. The more species an ecosystem contains, the more likely some of them will be resistant to environmental stress.” Based on the above statement discuss the need for biodiversity in Senegal. Evaluate possible human impacts or natural f ...
Biology Chapter 14: Interactions in Ecosystems
Biology Chapter 14: Interactions in Ecosystems

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Thessalou-Legaki et al. 2006
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... The tropical Atlantic grapsid crab Percnon gibbesi (H. Milne Edwards, 1853) may be regarded as the most invasive decapod currently expanding its distribution in the Mediterranean Sea. The present paper records its presence in Greek waters since 2004. The species seems well established along the coas ...
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... One of the basic concepts of evolution is that organisms compete for the available resources in their environments: food, shelter, or mates. Organisms that are more fit will be able to win this competition. An animal that outperforms others, such as running faster, locating food better, or surviving ...
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... 26. In tidal pools, the food pyramid is "inverted." There is a small base of phytoplankton and a larger top of zooplankton. A. This proves that sometimes it is possible for a small amount of plant tissue to produce a large amount of herbivores. B. This is based on numbers, and there are a few large ...
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Plate Tectonics - Mr. Brown`s Science Town
Plate Tectonics - Mr. Brown`s Science Town

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Ecology - Dickinson ISD

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7. Ecological Succession

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Ecology_coaches workshop
Ecology_coaches workshop

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Biogeography



Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area. Phytogeography is the branch of biogeography that studies the distribution of plants. Zoogeography is the branch that studies distribution of animals.Knowledge of spatial variation in the numbers and types of organisms is as vital to us today as it was to our early human ancestors, as we adapt to heterogeneous but geographically predictable environments. Biogeography is an integrative field of inquiry that unites concepts and information from ecology, evolutionary biology, geology, and physical geography.Modern biogeographic research combines information and ideas from many fields, from the physiological and ecological constraints on organismal dispersal to geological and climatological phenomena operating at global spatial scales and evolutionary time frames.The short-term interactions within a habitat and species of organisms describe the ecological application of biogeography. Historical biogeography describes the long-term, evolutionary periods of time for broader classifications of organisms. Early scientists, beginning with Carl Linnaeus, contributed theories to the contributions of the development of biogeography as a science. Beginning in the mid-18th century, Europeans explored the world and discovered the biodiversity of life. Linnaeus initiated the ways to classify organisms through his exploration of undiscovered territories.The scientific theory of biogeography grows out of the work of Alexander von Humboldt (1769–1859), Hewett Cottrell Watson (1804–1881), Alphonse de Candolle (1806–1893), Alfred Russel Wallace (1823–1913), Philip Lutley Sclater (1829–1913) and other biologists and explorers.
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