Hello There! ^_^
Your question: Which of the following is not evidence of sea-floor spreading..?
Your answer: The distribution of ice sheets across the planet is not an evidence of sea-floor spreading.
The answer is option C.
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Ocean ridges are been formed due to The upwelling of magma from the asthenosphere.
What is Ocean ridges?
Mid-ocean ridges can be regarded as a process which do occur along divergent plate boundaries.
This occurrence do happen where new ocean floor is created when the Earth's tectonic plates spread apart.
- It should be noted that As the plates separate, there would be rise in molten rock.
Therefore, option B is correct.
Learn more about Mid-ocean ridges at,:
brainly.com/question/2063308
<span>C. Mercator projection</span><span>
The four tools that mapmakers uses in order to help reader interpret information on maps are:
=> Direction - This is where they give the direction on the map. Where to find the North, South, East and West.
=> Legend – This is where they give symbols on a map in order to depict meaning of a certain object written in a Map
=> Title – This is the most essential feature of the map. The content of the title should also be measured regarding to the lettering used.
=> Diagram – This is where neatlines, locater maps, insert maps and index maps are indicated.</span>
<span>The correct answer for the question that is being presented above is this one: "Topographic maps feature contour lines to portray the shape and elevation of the land. Topo maps render the three-dimensional ups and downs of the terrain on a two-dimensional surface. It also includes contours. Orthophoto maps</span> show land features using color-enhanced photographic images which have been processed to show detail in true position. They may or may not include contours."