As you know my proposal title is "Integrated Hydrogeochemistry and Remote Sensing Analysis for Sustainable Development of Surface and Groundwater Resources in Gilgit-Baltistan, Pakistan" so i need NAME_1 comprehensive introduction about this topic with concise way and NAME_1 good sequence , you can read some update articles from the science direct and add intext citation and references also. the word count is 300 but make sure introduction is solid because it is the pHd level thesis proposal . thanks 