Sentence Correction (SC) | New data from United States Forest Service ecologists show

Let’s decode the structural jumble of the sentence by patiently parsing it.

New data from United States Forest Service ecologists showthat for every dollar spent on controlled small-scale burning, forest thinning, and the training of fire-management personnel, it saves seven dollars that would not be spent on having to extinguish big fires.

New data from United States Forest Service ecologists show ---- This is the main clause

That –the subordinate conjunction introducing the 1st sub-ordinate