It states that layers of sediment are originally deposited horizontally due to the effects of gravity.
Autonomous Region. This is the correct answer.
They are close to the equator, another reason is because of the tropical maritime location, temperature changes throughout the region are generally small.
Coal workers' pneumoconiosis (CWP), commonly known as "black lung disease," occurs when coal dust is inhaled. Over time, continued exposure to the coal dust causes scarring in the lungs, impairing your ability to breathe.
