Final answer:
Glacial marks in warm regions support plate tectonics by showing that these areas were once in colder climates, implying that continental drift has altered their positions over time.
Step-by-step explanation:
Glacial marks in warm places are evidence supporting the theory of plate tectonics. Glaciers scratch and grind down rocks during their movements, leaving marks and carrying material such as boulders to different locations. When glacial imprints are found in areas that are now warm, it suggests that these regions were once located in much colder climates, likely closer to the poles. Plate tectonics explains this phenomenon: continents and landmasses gradually drift over time due to movements within Earth's mantle, changing their positions and climates. This drift could have moved land from polar regions, where glaciers formed, to warmer latitudes where we now find the glacial marks. This evidence aligns with Alfred Wegener's early 20th-century theory of continental drift and later advancements in understanding Earth's geologic history, including the ancient configuration known as Pangea.