The New York state fossil Valcourocreas is classified as coral.
They had a large of mineral resources.
The population decays by a factor of (1/2 )^1/4 every hour.
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Exponential Function</h3>
An exponential function is in the form:
y = abˣ
Where a is the initial value of y, b is the multiplier, y and x are variables.
Let y represent the bacteria population after x hours.
A bacteria population decreases by a factor of 1/2 every 4 hours.

The population decays by a factor of (1/2 )^1/4 every hour.
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Truman and Stalin we’re both powerful leaders. In 1947, the ‘Truman doctrine’ was announced. This doctrines purpose was: to contain threats in Greece and Turkey, and to counter Soviet geopolitical expansion during the Cold War. This was an act of maintaining peace.
Similarly, Stalin had also created a foreign policy which was commonly referred to as, ‘Stalin’s four point foreign policy’. This policy was declared in 1939, and was used to enforce his ideas of communism and to better the Russian people.
To conclude, both Truman and Stalin used foreign policies to maintain and control peace within their countries.