Question

question 5
kelp _.
is an invasive exotic species
suffers intense herbivory from zebra mussels
is eaten by sea otters
is pollinated by sea urchins
suffers intense herbivory from sea urchins

Explanation:

Kelp is a native sea - weed. Sea urchins are known to graze on kelp, causing intense herbivory. Zebra mussels do not primarily target kelp for herbivory. Sea otters eat sea urchins, not kelp. Kelp is a marine alga and does not have the process of pollination as it is not a flowering plant.

Answer:

suffers intense herbivory from sea urchins