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Water Essay

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Water Essay
जल कि जीवन के सभी ज्ञात रूपों के अस्तित्व के लिए आवश्यक है एक आम रासायनिक पदार्थ है. ठेठ उपयोग में पानी अपने तरल रूप या राज्य ही है, लेकिन संदर्भित ने पदार्थ भी है, और एक ठोस राज्य, बर्फ है एक गैसीय अवस्था, पानी भाप या वाष्प. Water covers 71% of the Earth 's surface [ 1 ] . जल पृथ्वी 'सतह [1 नों के 71% को कवर]. पृथ्वी पर, यह ज्यादातर महासागरों और अन्य बड़े जल निकायों में, aquifers में जमीन और 0,001% से नीचे पानी के 1.6% के साथ भाप के रूप में हवा में, बादलों (ठोस और तरल पानी का गठन हवा में निलंबित कण), पाया जाता है और तेज़ी. [2] खारे पानी महासागरों, और अन्य भूमि की सतह के पानी नदियों, झीलों और तालाबों 0.6% इतने के रूप में सतह के पानी, ग्लेशियरों और ध्रुवीय बर्फ टोपियां 2.4% से 97% पकड़ो. पृथ्वी के पानी की एक बहुत छोटी राशि जैविक निकायों और विनिर्मित उत्पादों के भीतर निहित है. अन्य पानी बर्फ टोपियां, ग्लेशियरों, aquifers, या झीलों में, कभी कभी धरती पर जीवन के लिए साफ पानी उपलब्ध कराने में फंस गया है.

. जल लगातार वाष्पीकरण या स्वेद (evapotranspiration), तेज़ी का एक चक्र है, और runoff, आमतौर पर समुद्र पहुँचने के माध्यम से चालें. Winds carry water vapor over land at the same rate as runoff into the sea. हवाओं भूमि के ऊपर के रूप में runoff उसी दर से समुद्र में पानी भाप ले. भूमि, वाष्पीकरण से अधिक है और पसीना भूमि पर तेज़ी में योगदान.
स्वच्छ , ताजा पीने के पानी और अन्य मानव जीवन के लिए आवश्यक है. . प्रवेश सुरक्षित पेय जल के लिए निरंतर और दुनिया के लगभग हर हिस्से में पिछले दशक में काफी अधिक सुधार हुआ है. [3] [4] हालांकि, कुछ पर्यवेक्षकों कि 2025 से अधिक होने का अनुमान है कि दुनिया की आबादी का आधे से अधिक पानी का सामना करना पड़ जाएगा आधारित भेद्यता, [5], जो संयुक्त राष्ट्र संघ द्वारा एक पानी के संकट को बुलाया गया है एक की स्थिति. . एक रासायनिक पदार्थों का एक व्यापक विविधता के लिए विलायक के रूप में कार्य करता है और के रूप में औद्योगिक ठंडा और जल परिवहन की सुविधा है, जो विश्व अर्थव्यवस्था में महत्वपूर्ण भूमिका निभाता है. 6 ] मीठे पानी का लगभग 70 प्रतिशत कृषि द्वारा खपत है. [6]

पानी के तीन राज्यों में दिखाई दे सकता है, यह एक बहुत कुछ पदार्थों के स्वाभाविक रूप से पृथ्वी

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