[2026] PTE Academic Reading - Re-order paragraphs

By providing an abundant source of synthetic fertilizer, the process triggered a massive expansion in global food production.

The Haber-Bosch process is often cited as one of the most significant industrial breakthroughs of the early 20th century.

However, this heavy reliance on industrial fertilizers has since led to environmental challenges, such as the pollution of aquatic ecosystems through nutrient runoff.

Before its invention, global agriculture relied on limited supplies of naturally occurring nitrates to fertilize crops.

This chemical reaction allows for the large-scale synthesis of ammonia by combining atmospheric nitrogen with hydrogen gas.