Question

the north pacific gyre is a plastic debris accumulation area driven by currents and weather systems in the northern pacific ocean. in the north pacific gyre, what is the ratio, by mass, of plastic debris to zooplankton? 1:5 6:1 20:1 1:2 1:1 question 12 0.5 pts true or false: marine debris is dominantly an ocean - based problem. it is due to ocean - based sources including fishing vessels, stationary platforms, cargo ships and derelict fishing equipment. false true

Explanation:

Step1: Recall marine debris knowledge

Marine debris is not only from ocean - based sources. A significant amount of land - based sources like litter washed into the ocean via rivers also contribute to marine debris. So the statement in question 12 is false. For the ratio in question 11, research has shown that in the North Pacific Gyre, the ratio of plastic debris to zooplankton by mass is about 6:1.

Answer:

Question 11: B. 6:1
Question 12: A. False