Given the growing demand for sustainable aviation fuels (SAF), what are some viable options that FlyGreen Airlines could consider for powering its aircraft? Discuss the advantages and limitations of various SAF sources, such as biofuels, synthetic fuels, and hydrogen-based fuels, in terms of cost, availability, and environmental impact. Be sure to maintain your disciplinary perspective when discussing the above (see Week 1 Collaboration for the list of disciplines)