Question

glue secreted by seaweed or barnacles is an adaption to which of the following environments?
rocky intertidal
sublittoral
shallow oceanic
deep ocean

Explanation:

In the rocky intertidal zone, there are strong wave actions. Seaweed and barnacles secrete glue to attach themselves firmly to the rocks. This helps them withstand the force of waves. In subtidal, shallow oceanic, and deep - ocean environments, the need for such a strong attachment mechanism due to wave - related forces is not as prominent as in the rocky intertidal.

Answer:

rocky intertidal