The fact that the mixing zone in the ocean constitutes a of the total ocean volume means that wastes dumped into theocean will be diluted.
a) small; slowly
b) small; quickly
c) large; slowly
d) large; quickly

A) small; slowly

Explanation:

The mixing zone of the water in the oceans constitutes a small part or percentage of the area and thus results in the slow circulation of the dumped wastes in the ocean bottoms and hence this gets diluted slowly. As 8 million tonnes of plastic waste, a dropped every year in the oceans that do get recycled easily and stays there for a long time and contains heavy metals and debris.

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