Hydraulic fracturing and horizontal drilling have increased dramatically in Pennsylvania Marcellus shale formations. however the potential for major environmental impacts are still incompletely understood. High-throughput sequencing of the 16S rRNA gene was performed to characterize the microbial community structure of water. sediment. https://www.diegojavierfares.com/mega-save-KSUBI-4-X-4-TRAK-Mens-Apparel-great-choice/