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ECOSYSTEMS (relationships and competition for limiting factors )
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Ecosystems… Include all the different organisms living in a certain area and the physical environment
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Ecosystems… Do not have clear boundaries between them… organisms move from one ecosystem to another
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ORGANISM: one individual living thing ONE red zebra fish
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SPECIES- Group of organisms able to reproduce fertile offspring that resemble each other all red zebra fish
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POPULATION: group of individuals of the same species living in the same area all red zebra fish living in Bobcat Lake
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COMMUNITY: group of interacting populations of different species in the same area all red zebra fish, snails, seaweed, and purple fish living in Bobcat Lake
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ECOSYSTEM: a community and the abiotic factors that affect it
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PRODUCERS Form the base of all ecosystems Organisms that make their own food (by photosynthesis)
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CONSUMERS Depend on producers for survival Organisms that eat producers or other consumers PRIMARY- eat producers SECONDARY- eat other consumers
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PRIMARY CONSUMERS
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SECONDARY CONSUMERS
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Organisms that digest producers and consumers when they die DECOMPOSERS & SCAVENGERS
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DECOMPOSERS- organisms that break down dead organisms & release nutrients back into the ecosystem
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SCAVENGERS- animals that eat organisms killed by a predator- vultures and opossums
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HABITAT- The actual place where an organism lives NICHE- An organism’s way of life, all the things it does to survive
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HABITAT- The actual place where an organism lives Which populations share the same habitat? Niche?
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Food webs show the interaction of all the types of organisms in an environment. show how energy flows in an ecosystem
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Ecosystems are made up of…. ABIOTIC FACTORS- nonliving parts of the ecosystem BIOTIC FACTORS- living parts of the ecosystem
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Organisms need certain biotic and abiotic factors for survival. These flowers need abiotic factors of water, sunlight and the right temperature to grow DEPENDENCE
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COMPETITION Relationship between species in which they attempt to use the same biotic or abiotic factor 2 plants on the forest floor competing for sunlight Hyena and lion fight over the same animal carcass
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HABITAT- The actual place where an organism lives How might the hyena and the cheetah compete for a biotic factor? How might the primary consumers compete for an abiotic factor in the African grassland?
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PREDATION One organism kills and eats another PREY- one that is eaten PREDATOR- one that does the eating
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Can you name a predator-prey in the food web?
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PARASITISM Organisms that live in or on another organism and feed on it without immediately killing it The parasite takes its nourishment from the host.
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Can you name a predator-prey? How do the fox and hawk compete? Can you name the abiotic factors? Can you name the biotic factors? Can you name a producer- consumer?
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Fish eating algae off a sea turtle shell provides food for fish while cleaning the turtle shell MUTUALISM Cooperative partnership between two species. BOTH SPECIES BENEFIT!
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Relationship in which one species is helped and the other is neither helped nor harmed COMMENSALISM Remoras and Sharks: remoras attach themselves to sharks & feed on scraps of food left over from the shark’s meals
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