Final answer:
The two main challenges to overcoming world food insecurity are poverty, which limits economic access to food, and climate change, which disrupts agricultural production and food distribution systems.
Step-by-step explanation:
Two major challenges that exist to banishing world food insecurity are poverty and the effects of climate change on agriculture. Poverty is a significant hurdle as it is the main driver of food insecurity, with a vast number of people living on less than $1.25 per day and lacking economic access to food. On the other hand, climate change has created disruptive effects on agricultural production and food systems, making it difficult to produce enough food and distribute it effectively. This situation is exacerbated by food system failures such as transportation and storage issues, market dysfunctions, and supply chain disruptions, including those triggered by the COVID-19 pandemic.