Which observation about the Rocky Mountains and the Appalachian Mountains would support the claim that exposure to weathering and erosion over time can change land forms? The Appalachian Mountains are found in the eastern United States and the Rocky Mountains are found near the west coast.

The shorter and more rounded Appalachian Mountains are more than four times older than the taller and more jagged Rocky Mountains.

The length of the Appalachian chain is approximately 2,400 kilometers, and the Rocky Mountain chain is about twice as long.

The Appalachian Mountains are composed mostly of sedimentary rocks while the Rocky Mountains also contain other rock types.
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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.

which is not a category of marine organisms