how to solve?

Figure below shows streams in a catchment with its order using the Strahler Stream Ordering. a. Determine each measures of Strahler Stream Ordering from the Bifurcation Ratio until the geometric mean of the individual ratio. To best assist you, please use a table. b. Determine the gradient of the least squares best-fit line for the law of stream number. Please use a table as well and do not forget the plot. 2 2 3 N 2 3 2 2 3 Figure 4.7 A river network with Strahler's stream ordering