Researchers estimate that the Pacific Ocean contains at least 46 pounds of floating microplastic pieces (microbeads) that originate from hand cleaners, exfoliating facial scrubs, and toothpaste, that are known to transport pollutants and be eaten by fish.

Answer is million.

Refer below.

Explanation:

Researchers estimate that the Pacific Ocean contains at least 46 million pounds of floating microplastic pieces (microbeads) that originate from hand cleaners, exfoliating facial scrubs, and toothpaste, that are known to transport pollutants and be eaten by fish.

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