The road was built on permafrost to prevent it from sinking.
A layer of soil that remains frozen for two or more years.
Scientists study permafrost to understand climate change.
A permanently frozen layer beneath the surface of the ground, often found in polar regions.
शक्तिशाली निःशुल्क चित्र शब्दकोश र फ्ल्यासकार्डहरू सहित।
