Question: <u><em>"Why does Earth’s surface change? How does Earth’s surface change?"</em></u>
Answer: "Earth is a <u>system of frequent interaction between the surface conditions, interior, and external events</u>. Many of Mother Nature's lets say <u>'Natural Disasters' </u>is one of the many things that <u>help to mold and shape</u> our planet. Take, for example, volcanos into consideration: when the eruption begins within a volcano, <u>it pushes up new material from underground, helping to create new land forms</u> (this was how many of Hawaiian's islands were created.)
Shifting of tectonic plates within the Earth's crust and upper mantle is another reason. The plates are <u>constantly interacting</u>, and lets say, 'grinding' together, as well as <u>some colliding and breaking apart</u>. Any of these reactions to the shifting of the tectonic plates can <u>build any of our landforms and landscapes</u> <em>(including mountain ranges, oceans, valleys, etc.)</em>
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Also, another case of nature, erosion of the surface from<u> water, wind, sand, chemicals,</u> and <u>living land creatures</u> can develop and mold the surface of Earth as well. Countless numbers of forces are<u> frequently breaking down and departing the surface</u>, <u>moving and spreading</u> the materials of the surface to other sides of the Earth, later on perhaps <u>building new formations.</u>"
^I understand this is a lot to read and probably more than you were hoping for, but I hope this can at least point you into the right direction. Happy Early Valentines Day!