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.
erode means to wear away slowly
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I'd say that yes, the coronavirus has impacted pollution levels. According to several reports, the pollution level in China has decreased.
Answer:
Which of the following is a characteristic of outer planets?
Have rings
<em>Outer planets refers to the planets from Solar System with a higher proportion of volatile substances (water, ammonia).</em>