Answer:
1. 8000 meters
2. Fossils
Step-by-step explanation:
1. Rate of southern movement of the plate = 2 cm/year.
In 4000 years, the plate will move a distance of 4000 years * 2 cm/year = 8000 meters
Therefore, the plate will move a distance of 8000 meters south in 4000 years.
2. Wegener in supporting his theory of continental drift used fossils, geologic and glacial evidences. He compared the fossils found in different continents and argued that the presence of fossils of certain animal fossils such as the Lystrosaurus which are found in antarctica, India and South Africa indicates that the continents drifted apart as the Lystrosaurus could not have swam across the ocean to get to these different continents. Also, using geologic evidence by comparing rock structures on opposite sides of the Atlantic ocean, he determined that there were similarities between the rock strata of the Karroo system of South africa with the Santa Carina system in Brazil.