Final answer:
Three serious problems facing the developing world today are poverty, climate change, and war/political unrest.
Step-by-step explanation:
Poverty: Poverty creates social unrest and political instability, limits access to education and healthcare, and hinders economic development.
Climate Change: Climate change affects developing countries more severely, leading to environmental and industrial pollution, natural disasters, and food instability.
War and Political Unrest: Conflict and political instability disrupt infrastructure, agriculture, and create chaos, leading to long-lasting consequences for developing countries.
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