Answer:
Correct answer is A. Islamic calendar.
Explanation:
A is correct as this answer known as Hijra happened in 622. This year marks the period from when the Muslims started counting time.
B is not correct as Medieval period starts with the fall of Western Roman Empire.
C and D are not correct as this don't refer to the Muhammed's move from Mecca to Medina.
I think it wants you to use the arrows to see how each of the them are related to rivers. Then you have to explain why you chose the places your arrows go
Mountains support Wegeners idea by how he saw that the same species on one mountain was the same on a different one thus causing him to believe that the earth is forming or making mountains in some way.
Answer:
Planet Earth is similar to Venus and Mars. 1. They are all planets. And how they are different they are different sizes and have different types of weather and only life can live on Earth instead of Venus and Mars.
Explanation:
