The correct answer is D. ocean floor mapping and earthquake tracking
Tracking earthquakes is helpful because it shows where it came from and what caused it, as well as how it affected the environment, while ocean floor mapping is useful because it shows how the bottom of the sea changed over time which happens due to tectonic activity.
Canada is the most educated country globally, with 56.71% of adults meeting the OECD criteria.
Answer:
An area where people choose to live has boundaries that can not be seen on a map