Answer:
because they are very small in size
Answer:
To the north and west of Ancient China were two of the world's largest deserts: the Gobi Desert and the Taklamakan Desert. These deserts also provided borders that kept the Chinese isolated from the rest of the world. This is why the Great Wall of China was built to protect the Chinese from these northern invaders.
A heterogeneous mixture is a mixture in which its components retain their identity (texture, surface tension, etc.)
Answer:
government question: North Korea