It should be C.United States...Hope this helps
Answer:
to provide a reference system
Explanation:
The equator and prim meridian used on maps provides a reference system for determining location and navigating the earth.
- An equator is the only line of latitude that is a great circle.
- Prime meridian is a line of longitude that is 0°
- When both are used, they can form the basis of a reference system to determine places on earth.
- Using these lines, we can assign values of coordinates to the earth surface to facilitate location determination.
The equator and prime meridian are used on maps to provide a reference system.
It is used to display the orientation of the cardinal directions. And their intermediate points.
Answer:
Option (A)
Explanation:
Trenches are usually defined as deep and narrow depressions that are formed along the convergent plate boundaries. These are the region where two tectonic plates move towards each other and result in the formation of a subduction zone, where the denser plate subducts below the less dense one. As the heavier plate goes down, it reaches the mantle and the rocks undergo partial melting.
These trenches are located just above this zone of subduction. It can also be said that the presence of a trench indicates a subduction zone.
One of the famous trenches is the Mariana trench which is present in the Pacific ocean and it has a depth of approximately 11 km from the mean sea level.
Thus, the correct answer is option (A).
