| Question 1: Population density (in agriculture standing stock and standing crop) is a measurement of ________ per unit area or unit volume. | |||
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| Question 2: It is frequently applied to living organisms, and particularly to ________. | |||
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| Question 3: Low densities may be associated with specialized mate location adaptations such as specialized pollinators; as found in the ________ family (Orchidaceae). | |||
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