visible bits of plastic floating on every square kilometer of sea. Some knots of floating trash are even visible on satellite photos. Researchers from the Algalita Marine Research Foundation tested 11 randomly chosen sites in the middle of the Pacific Ocean and found that the mass of plastic was six times greater than the mass of plankton. Plastic does, over time, disintegrate into ever smaller pieces. But it takes centuries to break down completely.

The North Sea Floor Is Saturated with Plastic

A particularly crass example of seaborne trash is presented by the German Bight, a part of the North Sea on Germany's coast. Fully 8 million bits of garbage can be found there. In the southern part of the North Sea, an average of 575 pieces of refuse cangovernment (national, provincial, city, county, and township) to promote and implement the two-child policy, resource flows and work practices in the HFPCs directly determined the quality and quantity of family planning services, health services and population management \[[@B4-ijerph-16-02121]\]. Families are also organizations that responded to the new two-child legal environment. We are not assessing how individual families adjusted their family planning decisions to the two-child policy, which included factors such as personal preferences, family economic affluence, age at marriage, mortality rates, education levels and costs of children.

Institutional or legal changes to China's family planning have been a mix of evolution, modifications and sharp policy changes. Between 1955 and 1978, family planning service organisations put into effect China's changing legal rules on family planning, including launching nationwide birth control