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                                    Mention what do the following indicate on a topographical map — 1. Black stream 2. Blue stream 3. Green area 4. Yellow area 5. White area | 
                            
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Answer»  1. Black stream — It indicates that the stream is dry and has no water. 2. Blue stream — It indicates that the stream has water. 3. Green area — I indicates vegetation, mainly forests. 4. Yellow area — It indicates the area of cultivated land. 5. White area — It indicates barren land. No crops are grown in this land.  | 
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