Diksha was travelling in a train with her father in the coastal regions of kutch in Gujarat state. She noticed that there were shallow pits along the railway line filled with seawater. In a some pits there was white powdery substances. She also noticed small mounds of white substances collected by the workers. She wanted to know about such things, so she asked all such concerning questions to her father. Her father clarified her questions politely.

a. What are the values shown diksha in asking such question?

b. How are the white powdery substances collected?