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

Responses

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

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

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

the extinction of some species of algae

1 answer

The large-scale growth of coral reefs millions of years ago was primarily triggered by the relationship between corals and zooxanthellae. This symbiotic relationship allowed corals to thrive in nutrient-poor waters, leading to significant coral reef development.