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As Vince pointed it out,the problems of Marine environment is becoming serious. What I will say,is the most important one. It is the change of the Marine environment. This change is mainly reflected in three aspects:first,is the change of the physical environment,as you know,the temperature is increasing ,this leads to series of questions,such as the rising of sea level.OK,this in turn leads to the next question- the change of biological environment. Many times when we talk about this question , a picture will present itself in our mind ,this one ,some people just only remind this one. But do you know , the penguin at the South Pole is also need you attention . Just as these pictures show .Not only polar bears are influenced by the environmental change .What I want to say is the change of the environment is often far-reaching . So it must closely related to the third field-chemical environment. Look at this picture,the chemical composition and proportion is changing. Especially the problem of ocean acidification and eutrophication of the sea water.Its mean pH decrease and nutrients increase. This,in turn,will affect the physical environment and biological environment . So all the elements of the world are closely linked.Just as the Chinese old saying said-”牵一发而动全身”.What we need is to protect the world ,We can change the environment to improving our living environment, but remember, dont go against it.
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