At the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy. The outer core is about 1,355 miles (2,180 km) thick.
Answer:d
Explanation:
I think it’s d if not I’m sorry
The answer is the Altai Mountains and the Gobi Desert
China and Mongolia share a large land border stretching to more than 4,700 km
Most of the Western section of this border is covered in the Altai Mountains (Gold Mountains)
In the East, the Gobi desert covers the border, which end in Mongolia and where the grasslands start.
Mongolia itself is one of the least populated countries in the world. It is the 18th largest country in the world with a population of only 3 million people.
It is also the second largest land-locked country after Kazakhstan