Assertion: coral reef | /r/CapableOf | bleach bleaching
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Source sentences:
text: Coral reef bleaching Bleaching, or the paling of zooxanthellate invertebrates, occurs when (i) the densities of zooxanthellae decline and / or (ii) the concentration of photosynthetic pigments within the zooxanthellae fall (Kleppel et al. 1989).