# Shields, soils and permafrost

Watch the video below for an explanation about the shields, soils and permafrost within Russia. The video includes an assignment, how you score on that assignment dictates what the next step is for you:

- If you got 9 questions right you can skip the theory below;
- If you got 5 to 8 questions right (quickly) scan the theory below;
- If you got 4 or less questions right read the theory below and do the exercise.

This exercise is mandatory, I can see your answers so take it seriously.