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2
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is an organism that makes its own food
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3
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Is a final stable community
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4
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Each step through which energy is transferred
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5
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is the tyoe of succession that occurs on a surface where no ecosystem existed before, such as on rocks or sand dunes
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7
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Is gradual process of change and replacement of some or all of the species in a community
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8
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A sequence in which energy is transferred from one organism to the next as each organisms eats another organism
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9
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The first organisms to colonize any newly availabke area and the begin the process if ecological succession
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10
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organisms that get their energy by eating other organisms
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12
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Enegry from the sun enters an ecosystem when a plant uses sunlight to make sugar molecules
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13
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A process by which carbon is cycled between the atmosphere,land, and water
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14
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The process of breaking down food to yield energy
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15
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The more common type of succession, occurs on a surface where an ecosystem has previously existed
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16
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A process in which nitrogen is cycled between atmosphere, bacteria, and other organisms
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