The Appalachian Mountains are older than the Rocky Mountains and therefore have had more time to weather and get worn down. The Rocky Mountains are still considered to be relatively young and haven't weathered as much.
I got this one wrong. Luckily the quiz told me which was right. Here I took a snip.
Pacific Ocean
Sharing a common border throughout its northern extent with the United States, Mexico is bounded to the west and south by the Pacific Ocean, to the east by the Gulf of Mexico and the Caribbean Sea, and to the southeast by Guatemala and Belize.
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The correct answer to this item is "<span>was formed from lava cooling on earth's surface."
By definition, an extrusive igneous rock was formed as soon as the magma reached the Earth's surface from a certain volcano activity and it cools rapidly. The rock that was formed is considered an extrusive igneous rock.</span>
I think it is lower tax rates to invite people
