Final answer:
Wegener used fossil evidence, rock formations, and climate evidence to suggest that the continents had similar weather patterns and were once joined, supporting his hypothesis of continental drift.
Step-by-step explanation:
The type of clues that Alfred Wegener used that indicate that the weather was similar on all continents include fossil evidence, matching rock formations, and climate evidence. Among these, the fossil evidence of species that only could have lived in specific climates (such as lush, swampy conditions found in coal beds) indicated that continents (now separated by wide oceans) must have experienced similar weather patterns when they were joined. In addition, the matching fossils found on continents that were separated by vast oceans, like South America and Africa, point to a time when these continents were physically connected, supporting the continental drift hypothesis. This is corroborated by rock formations showing similar geologic structures and the presence of certain sedimentary layers, which provide information about past climates. Wegener also used paleoclimatic evidence, such as glacier scars and deposits found in India and South America, suggesting these lands were once closer to the polar regions where such features could form.