| 31. | The Primary Production Department also slapped an indefinite ban on horse traffic, newspapers reported Saturday.
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| 32. | This is a contrast to land, where most primary production is performed by vascular plants.
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| 33. | Singapore's Primary Production Department and Health and Environment Ministries said in a joint statement Friday.
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| 34. | Oceanic primary production accounts for about half of the carbon fixation carried out on Earth.
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| 35. | Global primary production can be estimated from satellite observations.
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| 36. | Variations of nitrogen in terrestrial and oceanic environments impact primary production and other biological processes.
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| 37. | It is then converted in gross primary production ( GPP ) by phytoplankton into organic carbon.
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| 38. | As of 2014, the majority land use within the locality is primary production .
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| 39. | Primary Production Department spokesman Chua Sin bin said.
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| 40. | Gross primary production is a measure of the energy that a photoautotroph harvests from the sun.
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