The biomass of young hatched herring declined from 11 million tonnes in 1956 to almost zero in 1970; that affected the ecosystem not only of the Norwegian Sea but also of the Barents Sea.
The biomass of young hatched herring declined from 11 million tonnes in 1956 to almost zero in 1970; that affected the ecosystem not only of the Norwegian Sea but also of the Barents Sea.
The biomass of young hatched herring declined from 11 million tonnes in 1956 to almost zero in 1970; that affected the ecosystem not only of the Norwegian Sea but also of the Barents Sea.
用更简单的措辞重写这个: The biomass of young hatched herring declined from 11 million tonnes in 1956 to almost zero in 1970; that affected the ecosystem not only of the Norwegian Sea but also of the Barents Sea. 输出: