If the Earth were a flat disc instead of a sphere, how would the patterns of solar radiation and temperature be different?

The spherical shape of the Earth is essential for uneven heating, weather patterns, climate systems, and the diversity of life on Earth. If the Earth were a flat disc, sunlight would fall almost equally on all regions, causing a more uniform distribution of solar radiation and temperature. There would be little or no temperature difference between regions. Seasons would also not occur in the same way because the variation in the angle of sunlight would be absent. Global wind systems, pressure belts, and ocean currents would either become very weak or disappear completely.