Answer:
Migration can also have an impact on larger social phenomenon, such as democratic institutions, environmental degradation and gender norms, either through the transmission of values and knowledge or through the resources provided by remittances.
Your answer would be B...
Those things usually contain kasine which is known to have addictive properties
Answer: The answer is Erosion
Explanation: It is probable that the natural process of Erosion caused the exposed layers of rock in The Valley.