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In the text below some words are missing. Drag words from the box below to the appropriate place in the text. To undo an answer choice, drag the word back to the box below the text.
Plastic Waste
Plastic waste accumulating in the global ocean is an increasingly threatening environmental issue. Although research on the topic has attracted attention in recent years, major knowledge remain. A scientific challenge at present is to determine the mass of plastic present on coastlines, the ocean surface and the deep ocean, as well as to quantify the plastic between these compartments.
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