Coral Bleaching & Acidification

Explain the mutualistic symbiosis between coral polyps and photosynthetic zooxanthellae; describe how heat stress causes bleaching (corals expel zooxanthellae and turn white); explain ocean acidification chemistry: CO2 dissolves in seawater to form carbonic acid, lowering pH and dissolving calcium carbonate skeletons; connect reef loss to the collapse of habitat for ~25% of marine species; evaluate current reef restoration efforts

Usually learned at ages 12–13

Builds on: Ocean Currents and Global Heat, Predator Loss and Ecosystem Effects, Ocean Ecosystems

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On the map from: Marble Skill Taxonomy (v1), © Generative Spark, Inc. (withmarble.com), text CC BY-SA 4.0, database ODbL 1.0: https://github.com/withmarbleapp/os-taxonomy