| 21. | The infection can be so severe as to control primary production within the lake.
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| 22. | A typical cargo of primary production goods for transport to London is described above.
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| 23. | Depending upon the incubation time chosen, net or gross primary production can be estimated.
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| 24. | The major land use within the locality is primary production.
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| 25. | Primary production fuelled by ammonium in this way is thus referred to as regenerated production.
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| 26. | Nearly all primary production in the ocean occurs here.
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| 27. | Primary production occurs in autotrophic organisms of an ecosystem.
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| 28. | Most island families have at least one member involved in primary production in some form.
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| 29. | Its primary production facilities are located in Calhoun, Georgia.
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| 30. | In oceans, most primary production is performed by algae.
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