After climate warming, food production generally increases in middle and high latitudes, while tropical and subtropical areas can only be dominated by some heat-resistant crops, and output declines, especially in Africa and Latin America. The famine crisis in the world's poorest regions will increase, hunger and Malnutrition causes a decline in the body's immunity and increases people's susceptibility to disease. Can this be launched? ['Middle and high latitudes are not the poorest regions in the world.', "Africa and Latin America have the world's poorest regions.", 'Global warming has less impact on mid-high latitudes than tropical and subtropical climates.', 'Global warming affects food production in Africa and Latin America above the world average.']