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MASS EXTINCTIONS ON THE EARTH

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                                                                                                                          MASS EXTINCTIONS In the last 500 million years life has had to recover from five catastrophic blows. More than 99% of all organisms that have ever lived on the Earth are extinct. At least a hadfull of times in the last 500 million years 75 to 90% of all species on Earth have disappeared in a geological blink of an eye in catastrophes we call mass extinctions. Top 5 worst mass extinction 1. The ordovician-Silurian extinction         439 million years ago         During the ordovician period most life on Earth lived in the sea. A Sudden dropping see levels occurred as glaciers formed and was sudden rise in sea levels occurred as glaciers melted. This dramatically impacted sea dwelling creatures, causing about 25% of marine families and 60% of marine genera to die. 2.   The late devonian extinction        364 million years ago        During this exti
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GEOLOGY OF BARWANI DISTRICT IN MADHYA PRADESH

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1. Introduction: Barwani district is one of the district of Madhya Pradesh state of India.The administrative headquarters of the district is at Barwani. Barwani district has an area of 5,427 km² and a population 1,385,881 ( 2011 census )The district lies in the southern western corner of M.P. The Narmada rivers forms its northern boundary. The Satpura range lies to its south.The district is bordered by Maharashtra state to the south, Gujarat state to the west, Dhar district to the north, Khargone district to the east. It is bounded by Latitudes 21.0 37’ to 22.0 15’ Nand longitude 74.0 28’ to 75.0 41’E. R.L. of Barwani is 178 m and area 11.12 sq km.  2. Flora and Fauna :  The different trees found in the forest are teak, palas,saja, mahua, Acacia, peacock flower tree and kher. Thorny bushes are also found in the forest of district. The area around Pati and Silawad are thickly forested. The wild animals met in the district do not differ remarkably from those found in most parts of the co
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पशुपालन

    पशुपालन                 "पशुपालन कृषि की वह शाखा है जहाँ जानवरों को मांस, फाइबर, अंडे, दूध और अन्य खाद्य उत्पादों के लिए पाला  जाता है।" पशुपालन से तात्पर्य पशु पालन और चयनात्मक प्रजनन से है।  यह जानवरों का प्रबंधन और देखभाल है जिसमें लाभ के लिए जानवरों के आनुवंशिक गुणों और व्यवहार को और विकसित किया जाता है।  बड़ी संख्या में किसान अपनी आजीविका के लिए पशुपालन पर निर्भर हैं। पशु हमें विभिन्न प्रकार के खाद्य उत्पाद प्रदान करते हैं जिनमें उच्च पोषण मूल्य होते हैं।  इसलिए, उन्हें बहुत अधिक देखभाल और ध्यान देने की आवश्यकता होती है। भोजन की उच्च मांग को पूरा करने के लिए जानवरों को व्यावसायिक रूप से प्रतिबंधित किया जाता है।  गाय, भैंस, बकरी जैसे जानवरों के डेयरी उत्पाद प्रोटीन के समृद्ध स्रोत हैं।  इन जानवरों को दुधारू पशु कहा जाता है क्योंकि वे हमें दूध प्रदान करते हैं। जानवरों का एक और सेट जो पोषक तत्वों से भरपूर भोजन प्रदान करते हैं वे मुर्गी, बत्तख, हंस आदि हैं, वे हमें अंडे प्रदान करते हैं, जो फिर से प्रोटीन के समृद्ध स्रोत हैं। मूर्गी, बतख, बकरी, सूअर आदि जानवरो
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FOREST FIRE AND DISASTER MANAGEMENT

A wild fire is an uncontrolled fire in a fuel vegetation area that occurs mostly in rural areas. Depending on the type of vegetation  present wild fire may be more specifically classified as brush fire,desert fire, wild fire, grass fire, forest fire, mountain fire vegetation fire or fine garden. Many forest fire start from natural causes such as lightning which set trees on fire. However rain extinguishes such fire without causing much damage. High atmospheric temperature and dryness (low humidity) offer favorable circumstances for a fire to start. Man made sources of fire like naked flame, cigarette or bidi, electronic spark or any source of ignition comes  into contact with inflammable, material.   The youngest mountain range of Himalayas the most vulnerable stretches of the world's susceptible to forest fires. The forest of western are more frequently vulnerable to forest fire as compared to those in Eastern Himalayas. This is because forest of Eastern Himalayas grow in high rai
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