Hydraulic fracturing (fracking) is often called high-volume (i.e., up to 5 million gallons of water) high pressure (i.e., 10,000 – 20, 000 psi) horizontal hydraulic fracturing, in which horizontal drilling technique is used to recover natural gas
The evolution of the immune system in terrestrial vertebrates has allowed a high efficiency in the protection against mutated and cancer cells, foreign substances and microbes. Immune cells however become fully immunocompetent only late during development or