How does the "Life in the wild" contribute to the author's argument in "Excerpt from Marine Mammals in Captivity"?

Incomplete question. I assumed you are referring to the article "Excerpt from Marine Mammals in Captivity" by The Humane Society of the United States.

Explanation:

In that section, the author provides real-life examples that back his claims about why animals should be taken from their natural wild habitat.

For example, the author stated, "The very nature of these animals makes them uniquely unsuited to confinement." He further continued by stating how Whales and Dolphins naturally love to travel long distances every day, "they are always aware, and  always moving."

The author made a lasting point by adding, "Understanding this, it is difficult to imagine the tragedy of life in no  more than a tiny swimming pool." With such expression the author no doubt causes the reader to think about the sudden changes experienced by these living organisms.  

an argumentative essay presents objectively a topic and its main characteristics. besides, it states all this information and facts by giving authentic and substantiated proof to the audience. by contrast, a persuasive text purpose is to convince the audience about some facts by presenting them according to his/her emotions and feelings. the main purpose of a persuasive text is to convince the audience to agree with the author´s opinion. on the other hand, in the argumentative essay, the author leads the writer to recognize his/her point of view as the correct one.

the father traits is what becomes more dominate the mothers is half dominate or vise versa depending on the gender.