Answer:
This is an image of a normal spiral galaxy.
Explanation:
The normal spirals have arms that emanate from the nucleus.
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Contagious diffusion is wide-spread and involves interpersonal contact.
Contour lines determine the steepness of the land by how close they are together. Generally, contour lines rise to a particular scale (e.g. a line for every ten metres), therefore, if the contour lines are closer together then the height of that particular area has risen more steeply than if the contour lines are further apart where the steepness has increased more gradually.