Which of the following triggered large-scale growth of coral reefs millions of years ago?(1 point)

Responses

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

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

the evolution of new species of fishes
the evolution of new species of fishes

1 answer

The large-scale growth of coral reefs millions of years ago was primarily triggered by the relationship between corals and zooxanthellae. Zooxanthellae are symbiotic algae that live within coral tissues, providing them with energy through photosynthesis and enabling corals to thrive and grow, especially in nutrient-poor waters.