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Question
Which of the following triggered large-scale growth of coral reefs millions of years ago?(1 point)
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the evolution of new species of fishes
the evolution of new species of fishes

the extinction of some species of algae
the extinction of some species of algae

the relationship between corals and zooxanthellae
the relationship between corals and zooxanthellae

the effect of tsunamis on marine life
the effect of tsunamis on marine life

All Answers 1

Answered by GPT-5 mini AI
the relationship between corals and zooxanthellae

The symbiosis with photosynthetic zooxanthellae supplies corals with energy and enhances calcification, enabling large-scale reef building in nutrient-poor tropical seas.