Whose tomb is gol gumbaz?

Who is Bering? Can Roller Coaster Pieces Fall Off? How do Kalahari tribes people shave? What is the American port on the thames? What was the main mystery described for the Mediterranean sea? What were the products made at Mission San Francisco Solano? How many km is the Victoria river? How many countries have deserts? What makes the Tower bridge strong? Why is the river Mississippi famous? What would the effect of a one meter rise in the Atlantic ocean be on Florida? Which 3 explorers made their journeys almost exclusively by water? What are the best beaches in St Maarten? What are the continuous stream of particles flowing out from the sun? Why is deep-sea exploration and data collection difficult? Who was the green river explorer? When sediment reaches a beach from a river does it stay in one place? How was life along the yellow river different from life along the Nile river? Is the story bridge an arch bridge? The canal connecting the Red Sea to the Mediterranean Sea?