I could never say I understand how you are all feeling, nor can I find the right words to say to you, but I do want you all to know, you are not alone

The religious conflict that took place in northern ireland in the 20th century was between which of the following?

Firms use marginal analysis to determine prices by a) changing prices in accordance with information from retailers. b) using comparisons with strong competitors to position prices accordingly. c) examining the effect on revenue of small changes to the price of one item. d) trying to minimize production costs by using better and more efficient methods.

Pleas give me brief explanation about deterministic model in advanced hydrology