Given alongside are two figures (A and B) showing a phenomenon that was first observed in Manchester before and after the year 1850.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1574550/original_Picture4.png)
d. The following phenomenon provides a classical explanation of a scientific theory given by a certain scientist.
(i)Name and explain the said theory.
(ii)Give the name of the scientist who gave this theory.