Answer:
2.the elevations on a map based on given values
Explanation:
It was once a body of water there, having the shell in the rock means that a sea creature lived there so there must have been water there at one time in history.
Metamorphism is the addition of heat and/or pressure to existing rocks, which causes them to change physically and/or chemically so that they become a new rock. Metamorphic rocks may change so much that they may not resemble the original rock.
