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Nature & Animals

Which risk to coral vitality increases when phosphate levels acutely spike?

A)Zooxanthellae expulsion, coral bleaching begins
B)Elevated ocean acidity dissolves skeletons
C)Rapid competitive algal overgrowth occurs
D)Increased coral calcification rate happens

💡 Explanation

Zooxanthellae populations decrease through exocytosis because phosphate inhibits nutrient transport pathways, which creates reactive oxygen species, therefore coral bleaching escalates exponentially rather than being stable because the established symbiotic mechanism now weakens.

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