Means finding a locations based on its distance from three other locations

It's either longitude or absolute location. Sorry if these aren't correct.

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .