<span>scarcity exsist becaues our needs
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Colombia. If you drove from the US to South America, you would be going south. The only North American country bordering South America is Panama, and the only South American country bordering Panama is Colombia.
Sedimentary rocks form by breaking down other kinds of rocks into small particles and washing or blowing them away; metamorphic rocks form from other rocks and igneous rocks form by melting other rocks. Thus rocks are always changing form and are redistributted as part of a giant cycle of renewal.