| 1. | The precipitation is around Bulgaria's average and is favourable for intensive agriculture.
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| 2. | These lands are now used for intensive agriculture or have become urbanized.
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| 3. | It does not occur in surrounding regions where intensive agriculture has spread.
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| 4. | Man-made sources of methane include intensive agriculture, coal mining and leaky gas pipelines.
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| 5. | Most of the land is flat and there is intensive agriculture.
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| 6. | The people had intensive agriculture, hunting and fishing, and developed government.
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| 7. | Oxbow lakes no longer exist because of the intensive agriculture of the valley.
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| 8. | Modern, intensive agriculture provides a rich environment for many plant viruses.
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| 9. | The need for intensive agriculture was recognized as early as 1776.
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| 10. | How can a labor-intensive agriculture industry compete in today's global economy?
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