第1个回答 2013-03-16
Surveys indicate that at 25 precious fishing resources have run out and many rare marine species are at the danger of die out because of overfish, denudation of mangrove forests, ad the contamination of oceans.
A wide range of sea creatures are of high ornamental value, so they have the potential of being artistic collections, together with their high nutritious values, people are now considering illegal fishing. Besides, the drastic increase of fishing boats, the improvement of fishing techniques can also attribute to the destruction of fishing resources or even the sea creatures' demise.
Global warming, which is caused by the Green House Effects took their home away.本回答被网友采纳
第2个回答 2013-03-20
According to investigation, due to overfishing and the mangrove deforestation, pollution of the marine environment in the world, at least 25 most valuable fishery resources depletion, many rare marine animal in danger of extinction.
Because there are a lot of marine animal with high ornamental value, but also can be regarded as the art collection, high nutritional value, people began to illegal fishing. Moreover, marine fishing boats increased dramatically, fishing period of steady improvement. Cause serious damage to these resources, and even lead to their death.
The greenhouse effect caused global warming so that they lost their homes.