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Digital SAT
Digital SAT Reading and Writing Section

Central Idea in Marine Ecosystems Exploration

Very Hard Information And Ideas Determining Central Ideas And Themes

Read the following passage:

In the depths of the ocean, a group of scientists embarked on a groundbreaking expedition to uncover the mysteries of deep-sea ecosystems. Their exploration revealed not only a wealth of biodiversity but also the delicate balance that sustains these underwater habitats. The lead marine biologist, Dr. Elara Finch, noted that each species, from the tiniest bioluminescent organisms to the largest predatory fish, played a crucial role in maintaining the ecological equilibrium. However, the researchers also highlighted the alarming threats posed by climate change and human activity, such as overfishing and pollution, which jeopardized the intricate networks that marine life depended on.

Dr. Finch emphasized the importance of conservation efforts, advocating for global cooperation to protect these vulnerable ecosystems. She called for policymakers to prioritize marine habitats in environmental legislation, as the health of the oceans directly influences the well-being of humanity. The expedition not only aimed to catalogue newfound species but also sought to raise awareness about the urgent need to act before it was too late.

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