B)coal. It was a major contributor because
The power or right to give orders , make decisions , and enforce obedience.
Answer: The United States did not officially join the league of nations due to opposition from isolationists in congress.
Explanation:
1. The purpose of this text is to inform us about the layers of the Earth and what they are composed of.
2. The mantle is a soft layer of molten rock called magma. In the upper parts, the rock is more rigid.
3. No. This statement is not true because the Earth is also made up of elements such as iron and nickel. The crust also contains life forms and water along with rocks.
