Levels of Organization & Energy Flow w/in an ecosystem
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| levels of organization within the living world | organism, populations, communities, ecosystems, biomes, biosphere.
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| population | All of the individuals of a given species in a specific area or region at a certain time.
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| members of a population compete for | food, water, space, and mates.
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| community | All the different populations in a specific area or region at a certain time
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| ___ involve many types of interactions among populations | communities
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| ecosystem | One or more communities in an area and the abiotic factors
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| abiotic factors | nonliving parts of an ecosystem
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| examples of abiotic factors | water, sunlight, air, temperature, and soil
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| biomes | Individual ecosystems grouped together according to the climate and the predominant vegetation
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| habitat | The place where an organism lives in order to obtain its food, water, shelter and other things needed for survival
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| niche | The particular role of an organism in its environment including type of food it eats, how it obtains its food and how it interacts with other organisms
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| energy roles | determined by how the organism obtains its energy and how they interact with other organisms in the environment
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| examples of energy roles | producer, consumer, or decomposer
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| consumer | an organism that obtains energy by feeding on other organisms
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| producer | an organism that can make its own food
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| decomposer | organisms that break down wastes and dead organisms and return the raw materials to the environment
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| food chains | Use pictures or words and arrows to show the movement of energy through the trophic levels of organisms
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| trophic level | indicates the position that an organism occupies in the food chain—what it eats and what eats it.
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| food webs | Describe the organisms found in interconnecting food chains using pictures or words and arrows
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| energy pyramid | Show the amount of energy that moves from one trophic level to another in a food chain
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| The most energy is available at the ___ level of the pyramid | producer
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| Energy availability ___ as it moves up the energy pyramid | decreases
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| population density | the number of organisms in a given amount of space
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| birth | main way that organisms are added to a population
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| birth rate | the number of births in a population during a certain amount of time
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| death | the main way that organisms leave a population
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| death rate | the number of deaths in a population during a certain amount of time
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| immigration | when organisms move into a population from another environment
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| emigration | when part of a population leaves the environment
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| limiting factors | affect the number of organisms an environment can supoort
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| examples of limiting factors | climate, availability of food, water, space, and shelter
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| carrying capacity | the maximum number of organisms that can survive in a particular ecosystem
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| climate | refers to the temperature and amount of rainfall in a particular environment
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Created by:
Ms. Phillips
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