Answer:
By measuring the quantity of unstable atoms left in a fossil and comparing it to the quantity of stable daughter atoms in the fossil , scientists can estimate the amount of time that has passed since that fossil formed.
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Answer:
Explanation:
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Answer: A. Large earthquakes offshore of Portugal.
Explanation:
Large earthquakes in coastal areas can cause tsunamis, an example of which being the boxer day tsunami in 2004.
The main U.S. goal in the Southeast Asia War was to protect South Vietnam -- initially from a local communist insurgency and later from conquest by communist North Vietnam. The U.S. also hoped to prevent the spread of communism to other nearby countries. ... The U.S. gave France military assistance in fighting insurgents