Rocks or Dirt. Most of the time geologist will use these to determine factors from the surrounding area such as how old it is, as well as how long its been there.
Answer: A recession is a period of economic contraction, where businesses see less demand and begin to lose money. To cut costs and stem losses, companies begin laying off workers, generating higher levels of unemployment.
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The Missouri Compromise, which preserved the balance between Free and Slave states.
