Answer:
Overlay is a GIS operation that superimposes multiple data sets (representing different themes) together for the purpose of identifying relationships between them.[2]. An overlay creates a composite map by combining the geometry and attributes of the input data sets. Tools are available in most GIS software for overlaying both Vector or raster data.
Explanation:
Before the use of computers, a similar effect was develioped by Ian McHarg and others by drawing maps of the same area at the same scale on clear plastic and actually laying them on top of each other.
They form when wind blows over the surface of the ocean. Wind energy is transferred to the sea surface. Then, the energy is carried through the water by the waves. This gives waves the energy to erode the shore.
Wegener could not provide a wholly acceptable explanation for the movement of the continents.
Explanation:
Alfred Wegener is the person that developed and promoted the continental drift theory. Despite him having developed the basic idea behind the process, as well as managing to find several clues to support it, his ideas were not accepted by the other scientists and he found it extremely hard to gain support. The main reason as to why this was the case was that he didn't really had wholly acceptable explanation about the movement of the continents.
Everything that Wegener provided as evidence was correct, and it was proving a point. The problem was that he still lacked explanation for the driving force of this process, nor did he had any proof about it, and that was the basis for all other things. Every clue that he had was the final product, but no one could explain as to how that actually happened.
Some of Wegener's evidence were:
- identical fossils on different continents
- matching coastlines
- spreading zones
- matching rock strata on different continents
Learn more about the continental drift theory brainly.com/question/5002949
#learnwithBrainly
