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Where does the energy for life processes come from?
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Sunlight
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How does energy flow through living systems?
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Sun / inorganic compounds - Autotrophs (producers) - Heterotrophs (Consumers)
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How efficient is the transfer of energy among organisms in an ecosystem?
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Only 10% of energy from one trophic level is transferred to the next so some energy is being wasted
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Autotroph
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Can capture energy from the sun or chemicals to produce food
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Producer
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Things that make their own food. Autotrophs are in this category
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Photosynthesis
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Autotrophs use light energy to convert carbon dioxide/ water into oxygen and sugar/starches
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Chemosynthesis
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When organisms use chemical energy to produce carbohydrates
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Heterotroph
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Organisms that rely on other organisms for energy/food supply
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Consumer
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Things that take up energy, consume it not make it. This includes Heterotrophs
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Herbivore
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Obtain energy by only eating plants.
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Carnivore
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Obtain energy by only eating other animals.
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Omnivore
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Obtain energy by eating both plants and other animals
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Detritivore
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Feed on dead matter such as animal remains as well as plants to obtain energy.
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Decomposer
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Break down organic matter.
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Food chain
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A series of steps in which organisms transfer energy by eating and being eaten.
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