Answer:
Evaporation.
Explanation:
Most cases of dropping water levels are simply evaporation, usually caused by higher temperatures in warmer climates.
The answer to this question would be A:growth factors
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The production of these crops is centered in the eastern third of the state but there are notable concentrations elsewhere, particularly in the river valleys of the Arkansas River (central Arkansas) and the Red River (southwest Arkansas).
Since this theoretical organism called a "superfly" does not die and has unlimited resources, the type of population growth for this particular species will be exponential. In plotting the graph of exponential growth, a J-shaped curve will be the result, starting from a steady logarithmic increase then eventually being vertical.