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NEW TPO 5 How does ocean acidification affect corals?

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Ocean Acidification
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Ocean acidification is a significant environmental issue resulting from increased carbon dioxide (CO2) levels in the atmosphere. When CO2 dissolves in seawater, it forms carbonic acid, which lowers the ocean's pH. This change in acidity affects marine life, particularly organisms with calcium carbonate shells, such as corals, mollusks, and some plankton species.

Coral reefs are among the most affected by ocean acidification. The acidic water makes it difficult for corals to maintain their calcium carbonate skeletons, leading to weakened structures and increased vulnerability to erosion and breakage. This process also disrupts the symbiotic relationships between corals and algae, further harming reef ecosystems.

Mollusks, including oysters and clams, struggle to develop their shells in acidic conditions, which can lead to reduced survival rates and impact the aquaculture industry. Plankton, at the base of the marine food web, also faces challenges, as their shells become more fragile, affecting their ability to reproduce and survive.

Efforts to mitigate ocean acidification include reducing CO2 emissions, protecting marine areas, and researching adaptive strategies for marine life. Addressing this issue is crucial for preserving biodiversity and maintaining the health of marine ecosystems.

2.How does ocean acidification affect corals?

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正确答案:C

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【题干翻译】海洋酸化如何影响珊瑚? 【定位信息理解】事实信息题。第2段第1-2句“Coral reefs are among the most affected by ocean acidification. The acidic water makes it difficult for corals to maintain their calcium carbonate skeletons, leading to weakened structures and increased vulnerability to erosion and breakage. 海洋酸化对珊瑚礁影响最大。珊瑚很难在酸性水中留住它们的碳酸钙骨骼,使其结构性变差,容易受到侵蚀和瓦解。” 【选项分析】 (A) 它促进珊瑚生长 —— 与原文“侵蚀、瓦解”矛盾 (B) 它加强珊瑚碳酸钙骨骼 —— 与原文“侵蚀、瓦解”矛盾 (C) 它使得珊瑚结构更容易分解 —— 正确 (D) 它提升了珊瑚与海藻间的共生关系 —— 未提及 正确答案:C

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