Roal Amunsen was the first.
The thick layer is the-crust
What
what ran through kush
???
The what?
C. Japan only uses renewable energy sources.
Answer:
Explanation:
Two landforms that can isolate and protect a civilization are mountain ranges and seas. Mountain ranges block invaders as they are hard to ascend and require invades to find a detour, thus prolonging the invasion. The sea is another barrier because the sea can be dangerous and so vast that people can get easily lost.
Hope that helps!
