| 11. | Methods of fighting back include chemical defences, mobbing, defensive regurgitation, and suicidal altruism.
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| 12. | In 1972, the chemical defence company was upgraded to the 158th Separate Chemical Defence Battalion.
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| 13. | In 1972, the chemical defence company was upgraded to the 158th Separate Chemical Defence Battalion.
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| 14. | The Chemical Defence Company was created.
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| 15. | In 1972, the Separate Chemical Defence Company was upgraded to the 81st Separate Chemical Defence Battalion.
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| 16. | In 1972, the Separate Chemical Defence Company was upgraded to the 81st Separate Chemical Defence Battalion.
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| 17. | In the kelp species " Alaria marginata ", phenolics act as chemical defence against herbivores.
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| 18. | The Nuclear Biological Chemical Defence and fire fighting and damage control school was established on 7 March 2006.
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| 19. | He worked from 1937 to 1943 at the Chemical Defence Establishment of the Meteorological Office at Porton Down.
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| 20. | From 1950, a Chemical Defence Establishment was established as CDE Nancekuke for small-scale chemical agent production.
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