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| a group of individuals of the same species which can freely interbreed and are found together in a particular place. |
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| a more-or-less self contained ecological entity, consisting of both organisms and their complete biotic and abiotic environment found in a particular place. |
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| the living (biotic) component of the ecosystem; it consists of a number of populations of different species found in a particular place. |
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| involves the linkage of ecosystems into regional classes, which have similar characteristics. |
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| the relative lengths of daylight and darkness that effect the physiology and behavior of an organism. |
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| the directional growth of plants in response to light where the direction of the stimulus determines the direction of movement. |
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| the movement of the whole organism in response to a unilateral light source, where the stimulus determines the direction of movement. |
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| variation in intensity of locomotory activity of animals which is dependent on the intensity of light stimulation, and not the direction. |
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| the movement of parts of a plant in response to a light source, but the direction of the stimulus does not determine the direction of the movement of the plant. |
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| plants which grow well in bright sunlight. |
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| plants which grow well in shady conditions. |
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| plants which grow in water. |
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| plants with average water requirements. |
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| plants which grow in dry environments where they often experience a shortage of water. |
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| a thin film of water around each soil particle. |
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| water held in the small spaces between the soil particles. |
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| the water which drains downwards through the soil. |
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| plant eaters which are the primary consumers. |
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Definition
| meat eaters which are the secondary consumers. |
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Definition
| eat plant and animal material and can be primary, secondary and tertiary consumers simutaneously |
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