The ring of fire is a ring of volcanoes and earthquakes that occur along:

a. plate boundaries

b. the mid-ocean ridge

c. only transform boundaries

d. hot spots

B. Plate boundaries

Explanation:

The ring of fire is a path in the Pacific Ocean that has a lot of active volcanoes that result from subduction of oceanic plates beneath the continental plates. Because of the movement of the tectonic plates in this area many earthquakes happen.

the answer is option b.

explanation:

eutrophication happens when abundance supplements are available in oceanic biological systems, bringing about the expanded generation of vegetation and the resulting diminish in the oxygen levels of the water   eutrophication happens when there are abundance supplements in a waterway. this outcomes in plants having more sustenance and reproducing  more, here and there prompting more amphibian creature life also. eventually, this can decrease the oxygen level in the biological community.