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2. What could estuaries do to the pollutants?
A. clean B. contaminate C. filter D. intensify
3. Who among the following DOES NOT show way of protecting
and conserving estuaries and intertidal zones?
A. Arnel dumps his wastes in a proper container.
B. Maggy limits the use of plastic products.
C. Nico uses synthetic fertilizer for his crops.
D. Rose recycles old things into something new.​