составить 5 вопросов на английском языке по тексту

Sure! Here are five questions based on the text:

1. What are the two great plains in Russia mentioned in the text?

2. Which mountain chain is described as the largest in Europe?

3. Name the three Siberian rivers that flow into the Arctic Ocean.

4. How is Lake Baikal described in terms of its depth and clarity?

5. What is said about the water level of the Caspian Sea compared to the Baltic Sea?