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Scanned with CamScanner€¦ · by acid rain.The condition of roads also deteriorates due to the acid content In limestone regions, acid rain is a major cause of sink holes because

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Page 1: Scanned with CamScanner€¦ · by acid rain.The condition of roads also deteriorates due to the acid content In limestone regions, acid rain is a major cause of sink holes because

Scanned with CamScanner

Page 2: Scanned with CamScanner€¦ · by acid rain.The condition of roads also deteriorates due to the acid content In limestone regions, acid rain is a major cause of sink holes because

Scanned with CamScanner

Page 3: Scanned with CamScanner€¦ · by acid rain.The condition of roads also deteriorates due to the acid content In limestone regions, acid rain is a major cause of sink holes because

Scanned with CamScanner