These days, elevations are measured from the Geoid model, which is a layer near sea level all of whose points have identical force of gravity.
The old terminology that is still popular was "Mean Sea Level". ("Mean" is about the same as saying, "Average").
Sea Level
landforms are connects the earths surface landforms are all examples of streets, sidewalks, and ports. landforms can be made by sandstones landforms are connented to all sources
The study of Earth's surface landforms is known as geomorphology.
Every line of longitude north of the Equator is a baseline that runs on the Earth's surface to the North Pole. Prime here is the Prime Meridian -- 0 degrees.
landforms! and are you doing geography ABC's?
makes new landforms creates mountains
The tectonic plates below earths surface shape earths landforms
landforms affect our settlements and our culture.
It does
The earth's major landforms are mountains, hills, plateaus, and plains.
landforms
buildings,landforms
tectonic plates
Which baseline runs from any point on earth's surface to the north pole
mountains valleys hills glaciers
Volcanoes
landforms are connects the earths surface landforms are all examples of streets, sidewalks, and ports. landforms can be made by sandstones landforms are connented to all sources
True North