Many human activities affect the health of global oceans. These many various activities are(1) but include fishing, manufacturing, and oil production. Pollution has increasedand in some areas we have even seen it (2) in recent years. The amount, or(3) of oxygen in the water is less because there is more pollution and carbon dioxide.Large ships such as oil tankers and (4). fishing boats pollute rivers that empty into thesea. Warmer water temperatures harm some fish (5) Scientists say that some fish willnot (6). if we don't make changes. Environmentalists (7) that weonly have 30 years before it's too late. We must (8) pollution and overfishing as soonas we can to make a difference. * (1) diverse, (2) double, (3) quantity, (4) commercial, (5) species, (6) survive, (7) estimate, (8) reduce (1) estimate, (2) double, (3) quantity (4) commercial, (5) species, (6) survive, (7) diverse (8) reduce (1) restore, (2) commercial, (3) quantity, (4) double, (5) species, (6) survive, (7) estimate, (8) reduce (1) diverse, (2) double, (3) quantity, (4) commercial (5) species, (6) reduce, () estimate, (8) survive (1) diverse, (2) double, (3) quantity, (4) commercial, (5) species, (6) survive, (7) estimate, (8)restore