Commercial shrimp fishermen are more than likely limited in influence because of a lack of:

Geographic distribution

Explanation:

 According to the given question, the commercial shrimp fishermen are basically limited in influence due to the lack of the geographical distribution as it plays an important role in the environment.

The geographical distribution is basically depend upon the physical environment and also the climate such as temperature, light and moisture.

The geographical distribution is basically refers to the managing the different locations and the regions on the earth. So, due to the lack of geographical distribution we cannot do anything.

 Therefore, geographical distribution is the correct answer.

answer; i believe that the correct answer is ( rivers);

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