Final answer:
The authors' presentations on ocean conservation differ in the depiction of human impacts, the solutions proposed, and the ecological relationships presented, using diagrams and contrasting levels of detail.
Step-by-step explanation:
To compare and contrast the ways authors shaped their presentations in the articles on ocean conservation, we must examine the text for details that highlight their approaches. Firstly, the articles may differ in their discussion on the impact of human activities on marine ecosystems, evidenced by one article providing before and after imagery of bottom trawling, which demonstrates the physical destruction caused by such practices.
Secondly, a comparison could be made based on how the authors address the solutions to the issues faced by oceanic life, with one detailing legislative measures for protecting endangered species, while another may emphasize grassroots movements and educational efforts. Lastly, there might be contrasts in how the authors choose to illustrate the ecological relationships in marine environments, such as the usage of an inverted pyramid to illustrate the relationship between predators and their prey, which conveys the idea of a top-heavy food web where the biomass and number of predators are disproportionate compared to their prey.
By focusing on specific textual details, such as the use of diagrams, the severity of human threats described, and the ecological concepts presented, we can understand the unique methods each author uses to shape their argument and engage their audience on the pressing issue of ocean conservation.