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both host and parasite are postively effected mutulistic relationship + - predator/prey/parasite/host only one in the relationship is effected positively and the other is not effected at all commensalism relationship no one is positively effected, all animals in the relationship are negatively effected competition relationship one animals is effected negatively by the other but nothing happens at all to the other annoyance no one is effect at all in this relationship indifference relationship No 2 species that have the same ecological Niche can occupy the same habitate at the same time Guases' Rule: Cometitive Exclusion Principle seperates 2 of the same species from eachother due towhat resources are available Resource Partitioning List the layers of the food chain sun--primary producers--consumers 1--consumers 2-- end chain carnivore only ten percent of carbons get from one trophic level to the next 10% Rule Species Richness the number of species present species relative abundance looking not just at one specific species but at all the species in a location Ecosystem community (biotic) and abiotic environment Grams of Organic C/ m2/ year Rate of primary productivity What are the 4 environmental spheres? Lithosphere, Hydrosphere, Biosphere, and Atmosphere Lithosphere- solid matterial not the living Hydrosphere- liquid matterial not the living Atmosphere- the air and not the living main reservoir= sink what is waters main reservoir? hydrosphere What is carbons and nitrogens main reservoir? Atmosphere What is phosphorous's main reservoir? lithosphere