Final answer:
Natural gas is considered as a transition fuel because it has a lower carbon footprint than other fossil fuels, releasing fewer pollutants when burned. It's seen as a more sustainable option despite issues related to its extraction process.
Step-by-step explanation:
Natural gas is seen as a bridge fuel to transition from oil to more sustainable options because it has a lower carbon footprint than other fossil fuels. When burned, it releases less carbon dioxide (CO2), nitrogen oxides, and sulfur dioxide compared to other fossil fuels like coal or oil, making it a preferred fuel when considering environmental impacts. Although it's still a nonrenewable resource, natural gas burns cleaner and is seen as a step towards more sustainable energy practices. Natural gas is also a major factor in electricity production and industrial processes. However, the extraction process, especially via hydraulic fracturing or 'fracking', can be problematic due to the large volumes of contaminated water produced, potential chemical hazards, and water usage which may impact aquatic habitats.