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energy role statement
each of the organisms in an ecosystem fills the energy role of producer, consumer, or decomposer
the way producers, consumers and decomposers are shown
the movement of energy through an ecosystem can be shown in diagrams called food chains and food webs
shows the amount of energy that moves from one feeding level to another in a food web
energy levels in the energy pyramid
the most energy is available at the producer level of the pyramid. As you move up the pyramid, each level has less energy available than the level below
how the carbon and oxygen cycle is similar
in ecosystems, the processes by which carbon and oxygen are recycled are linked. Producers, consumers, and decomposers play roles in recycling carbon and oxygen
in the nitrogen cycle, nitrogen moves from the air to the soil, into living things, and back into the air
how continental drift affects things
one factor that has affected how species are distributed is the motion of Earth's continents
how organisms can be dispersed
dispersal can be caused by wind, water, or living things, including humans
six major biomes
the six major biomes that most ecologists study are the rain forest, desert, grassland, deciduous forest, boreal forest, and tundra
types of water ecosystems
your travels will take you to two types of aquatic, or water based ecosystems: freshwater ecosystems and marine (or saltwater) ecosystems
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