Final answer:
Fracking, or hydraulic fracturing, extracts natural gas from deep unconventional reserves by using high-pressure fluids to fracture the rock and release the gas.
Step-by-step explanation:
During fracking, or hydraulic fracturing, natural gas is extracted from deep unconventional reserves. This method involves injecting high-pressure fluids underground to fracture the rock formations and release trapped gas and oil. Fracking technology has advanced in recent decades, making it a common practice for extracting unconventional gas, which is found in rocks with low permeability. This technique provides access to reserves that are difficult to extract through traditional methods, such as the gas found in shale formations.