From simple questions to complex issues, IDNLearn.com has the answers you need. Join our interactive Q&A community and access a wealth of reliable answers to your most pressing questions.

Students are visiting a marine national park.The tour guide tells them about __________, algae found within the gastrovascular cavity of coral.
A)
phytoplanktons
B)
marine debris
C)
coral algae
D)
planktons
E)
zooxanthellae