Who is responsible for the impacts of overfishing?

Japan, China, the U.S., Indonesia, Chinese Taipei and South Korea have been named by Pew Charitable Trusts on a “shame list” of countries responsible for overfishing tuna in the Pacific. According to Pew, the “Pacific 6” are responsible for 80 percent — 111,482 metric tons in 2011 — of the annual catch of bigeye tuna.

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it's c. elements are placed in rows based on how may valencies electrons have.

a polar bond is formed when electrons are shared unevenly between atoms