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Definition
nonliving factors in an ecosystem (ex. sunlight, water, air) |
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Definition
the most common gas in Earth's atmosphere |
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Term
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Definition
living or once-living parts of an ecosystem |
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Definition
decaying matter found in soil |
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Definition
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Definition
a key ingredient of DNA and protein |
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Term
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Definition
the beginning energy source for most life on Earth |
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legumes (beans, peas, peanuts) |
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Definition
the type of plant that helps to add nitrogen to soil |
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Term
compost, animal manure, chemical fertilizer, planting legumes |
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Definition
ways to add nitrogen to soil |
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Term
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Definition
when liquid water becomes a gas |
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Term
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Definition
when water vapor becomes a liquid |
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Term
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Definition
the two most adundant gases in the atmosphere |
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Term
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Definition
when water becomes water vapor as it exits plant leaves |
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Term
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Definition
when animals remove oxygen from the atmosphere |
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Term
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Definition
When bacteria change nitrogen from the atmosphere into a form that can be used by living things. |
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Term
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Definition
The cycle that is associated with the theory of global warming |
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Term
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Definition
The species that represents the final stages of succession |
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Term
Deciduous Forest (Oak & Hickory) |
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Definition
Example of a climax community in PA |
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Term
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Definition
the regrowth of life after a major disturbance- even soil must form |
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Term
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Definition
The regrowth of life after a disturbance- soil remains |
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Term
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Definition
The first step of primary succession |
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Term
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Definition
The first species to live in a disturbed area |
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