Where am I? I am a very large part of the World. Very few trees grow here. Eight countries have land here. I never get warmer than 50 degrees Fahrenheit or 10 degrees Celsius in the summer. Certain lights are viewed best from here. I have my own ocean. I also have my own circle. Where am ?

north pole area

Explanation:

1. The north pole (very northern canada greenland and russia) is a big part of the world, but it's growing smaller

2. It's all mostly ice, so barely any trees

3. SUPER cold there, so it doesn't get warmer than 50 f or 10 c

5. The north pole area's ocean is called the Arctic Ocean

6. the aurora lights, or the Northern lights happen there too.

answer; i believe the answer is hydraulic action;