保护海洋的重要性英语作文【多篇】

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保护海洋的`重要性英语作文 篇一

The seas and oceans receive the brunt of human waste, whether it is by deliberate dumping or by natural run-off from the land.

In fact over 80% of all marine pollution comes from land-based activities and many pollutants are deposited in estuaries and coastal waters. Here the pollutants enter marine food chains, building up their concentrations until they reach toxic levels. It often takes human casualties to alert us to pollution and such was the case in Minimata Bay in Japan when many people died as a result of a pollutant building up in food chains. A factory was discharging waste containing methyl mercury in low concentrations into the sea and as this pollutant passed through food chains it became more concentrated in the tissues of marine organisms until it reached toxic levels.

As a consequence 649 people died from eating fish and shellfish contaminated with mercury and 3500 people suffered from mercury poisoning.

保护海洋的重要性英语作文 篇二

Marine environment that includes water,sea water dissolves the material and suspended solids,sediments and marine organisms,including complex systems.The rich marine biological resources,mineral resources,chemical resources and power resources is an indispensable resource treasure house of human,with human survival and development of very close relationship.

The main objective of the current marine conservation is to protect marine biological resources,so as not to failure,for the sustainable use of human beings.Particular priority to protect the valuable and endangered endangered marine life.According to the United Nations to an investigation,due to overfishing,accidental killing of non-target to allow hunting of marine,coastal beaches of the construction,mangrove deforestation,pollution of the marine environment in general,at least 25 the world's most valuable fishery resources depleted,whales,sea turtles,manatees and many other marine animals are facing the danger of extinction.Expected that with the expansion of marine development,marine resources are likely to cause more damage.

First,the task of marine conservation of marine biological resources to stop the excessive use of,and secondly to protect the habitat of marine life or habitat,in particular,their migration,spawning,feeding,avoiding predators coast,beaches,estuaries,coral reefs,to to prevent the heavy metals,pesticides,oil,organic produce and easy to eutrophication and other pollution of the marine nutrients.Maintain the regeneration ability of marine biological resources and the natural purification capacity of water,preservation of the marine ecological balance and ensure the sustainable human development and utilization of ocean.

保护海洋的重要性英语作文 篇三

As we all know the sea food we eat is from the oceans.In the past,the oceans was very clean and beautifull,there were a lot of sea animals in them.But nowadays the oceans is dirty,many sea animals are die.we must keep them clean.We must stop polluting them.The oceans is very important to us!

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