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మడ అడవులు ప్రతి సంవత్సరం ఎకరానికి టన్నుల ఆకులను రాలుస్తాయి; శిలీంధ్రాలు మరియు బ్యాక్టీరియా ఈ ఆకుల చెత్తను విచ్ఛిన్నం చేసి తినేస్తాయి, తరువాత వాటిని చిన్న పురుగులు మరియు కీటకాలు తింటాయి, వీటిని చిన్న చేపలను తింటాయి, తర్వాత వీటిని పెద్ద చేపలు, పక్షులు మరియు మొసళ్ళు తింటాయి.

ఈ పై ప్రకటనకి ఈ కిందవాటిలో తార్కికంగా అనుసరించే అనుమితి ఏది?

 

This question was previously asked in
UPSC Civil Services Exam (Prelims) Official Paper-II 2015
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  1. మడ అడవులు లేకపోతే కోస్తా తీరాలలో ఆహారగొలుసులు ఏర్పడవు.
  2. అన్ని సముద్ర వాతావరణ వ్యవస్థలలో మడ అడవులు ముఖ్యభాగంగా ఉంటాయి.
  3. కోస్తా తీరపు కొన్ని ఆహార గొలుసులలో మడ అడవులకి ముఖ్యపాత్ర ఉంటుంది.
  4. సముద్ర వాతావరణంలో వృక్ష మరియు జంతు సంపద కూర్పుని దాదాపుగా మడ అడవులు నిర్ణయిస్తాయి.

Answer (Detailed Solution Below)

Option 3 : కోస్తా తీరపు కొన్ని ఆహార గొలుసులలో మడ అడవులకి ముఖ్యపాత్ర ఉంటుంది.
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Detailed Solution

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ప్రశ్న ప్రకారం: 
మడ అడవులు → ఫంగై/బ్యాక్టీరియా → పురుగులు/కీటకాలు → చిన్న చేపలు →  పెద్ద చేపలు →  మొసళ్ళు
దీని అర్థం మడ అడవులు కొన్ని కోస్తా తీరాల ఆహార గొలుసులలో అవసరమైన భాగాలు, ఇవి మరెక్కడా కన్పించవు. మడ అడవులు ముఖ్యంగా 25 °N మరియు 25 °S  అక్షాంశాల మధ్య ఉంటాయి. అయినా, సముద్ర జీవనానికి సంబంధించిన ఆధారం ఏదీ లేదు ఎందుకంటే భూమి యొక్క 70% ఉపరితలం నీటితోనే కప్పబడి ఉంటుంది.

అందుకని, కోస్తా తీరపు కొన్ని ఆహార గొలుసులలో మడ అడవులకి ముఖ్యపాత్ర ఉంటుందని చెప్పవచ్చు.

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