[2026] PTE Academic Reading - Re-order paragraphs

Aircraft manufacturers are experimenting with lighter materials and more efficient engine designs to lower fuel consumption.

Continued investment in these technologies is essential for ensuring that air travel remains a viable mode of transport in the future.

Sustainable aviation fuels, derived from organic waste, are also being tested as a cleaner alternative to traditional kerosene.

Achieving a fully carbon-neutral flight industry, however, will require significant improvements in battery and hydrogen-based propulsion systems.

The rapid growth of the global aviation industry has led to innovative efforts to reduce its carbon footprint.