1) The Madison Limestone is an important aquifer. Citizens are concerned about gas or chemical trucks overturning on roads and causing contamination. What is the total length of roads crossing the Madison, in kilometers

Approximately 113 kilometers.

Explanation:

The Madison Aquifer is an extremely sensitive environment and vulnerable to contamination from trucks that pass through its roads and overturn, spilling products that can impact this region in a very deep way. This vulnerability occurs because of the rocky outcrop areas and the roads that it has, which present several shortcuts to the trucks. It is estimated that the total length of roads crossing the Madisan is approximately 113 kilometers.

i am not sure but i believe your answer all but water and natural gas.

it sounds like either a or c