Mining activities can help acquire minerals like coal, which provide energy. Howevermining activities are also harmful for the environment. The table below shows the number of major sinkholes formed in a mining location from 1990 to 1998 Between 1990 and 1992
Between 1992 and 1994
Between 1996 and 1998
Between 1994 and 1996

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answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.