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 Appalachican 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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rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.