The population decays by a factor of (1/2 )^1/4 every hour.
<h3>
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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Answer: Because sand dunes protect inland areas from swells, tides, and winds, they must be protected and defended like national treasures. A strong and healthy beach dune is a powerful antidote against coastal erosion. The ocean and the wind can have an unpredictable, destructive force on coastal regions.
It states that rocks closer to the top are newest.
A, in urban areas :)
Urban areas have bigger populations than rural ones and the Rocky Mountains have terrain that is difficult to settle on
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Answer:</h2>
1. <u>Minerals</u>
2. <u>Geological</u>
3. <u>Indefinitely</u>
4. <u>Pressure</u>
<h2>
Explanation:</h2>
1. The minerals play a wide role in industrial and agricultural developments. In industries, the minerals are used as raw materials at the same time in agriculture, it is helps in growing plant growth as fertilizers and nutrients.
2. The geological activity includes movement of earth plates under the earth's surface which is mainly due to presence of heat deep inside the earth.
3. There are huge amount of minerals in this earth, but everything is need to be used in a very economical way, without wasting.
4. The pressure and temperature is need to favorable to form the minerals.