| 21. | In tropical areas, most are nocturnal and are attracted to light.
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| 22. | The genus contains about 20 species that are widely distributed in tropical areas.
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| 23. | These are birds of tropical areas, with the greatest variety in southeast Asia.
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| 24. | It is most commonly found in tropical areas, especially India and Sri Lanka.
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| 25. | European triffids never exceed, while those in tropical areas can reach.
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| 26. | It is widespread in tropical areas, and has a scattered distribution in Europe.
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| 27. | It is now widespread outside its native range, having been purposely tropical areas.
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| 28. | It can be found iin many parts of Bangladesh as well other tropical areas.
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| 29. | There are true yams ( Dioscorea species ) grown for food in tropical areas.
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| 30. | Black gram has also been introduced to other tropical areas mainly by Indian immigrants.
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