The core has the largest density, being made of iron and nickel
The mantle has an intermediate density and the crust has the lowest density.
<u>Answer:</u>
The "Tian Shan" is a great resource for iron, coal and lead mining.
<u>Explanation:</u>
- The Tian Shan that is located in the central part of Asia is a huge system of various mountain ranges that are said to have formed in the Pliocene period, about '7 to 2.5 million' years ago.
- It is spread over an area that is 2500 kilometers long and about 500 kilometers wide.
- The Tian Shan hosts numerous deposits of coal, iron, and lead.
Geographical barrier
Natural selection
Genetic drift
True. This is why cliffs change or older buildings are scuffed up. Not because of vandalism or animals it’s because small particles slowly erode away the surface.