Answer: volcanic activity
Explanation: The vast majority of volcanic activity on the planet occurs along the mid-ocean ridge, and it is the place where the crust of the Earth is born. The material that erupts at spreading centers along the mid-ocean ridge is primarily basalt, the most common rock on Earth.
Answer:
Explanation:
Affects what fish are in season
Compasses, rock hammer, field books, hand lenses, maps,
Im prerty sure it has something to do with the enconomy in the Usa
