5. What evidence suggests that continents were once joined together? a. Presence of volcanoes b. Formation of deserts c. Complementary coastlines of continents d. Existence of rainforests

The complementary coastlines of continents, such as the jigsaw puzzle fit of South America and Africa, provide compelling evidence that they were once part of a supercontinent known as Pangaea. Fossils of identical species have also been found on both sides of the Atlantic, indicating that these landmasses were once connected. Additionally, geological similarities, including mountains that span across continents and rock formations that match, reinforce this idea of continental drift. The alignment of these features suggests a shared geological past, supporting the notion of a unified landmass before they drifted apart millions of years ago.