Coral reefs are built by coral polyps as they secrete layers of calcium carbonate beneath their bodies. And inside each coral poly lives single-celled algae called zooxanthellae. So basically in simplistic terms, coral polys create coral reefs and algae is in coral polys which also goes into coral reefs when they are made.
Answer:
you shouldn't use this website for quizzes.
Explanation:
sorry...
It depends on what the big fish and the small fish eat
It is what gives our planet a specific axial tilt, spin and rotation, it is what gives us our present magnetic field.
