The National Academy of Sciences has ranked overfishing and collapsing food-fish populations as the most serious human activity which threatens the ocean.
(The National Academy of Sciences; has ranked; overfishing and collapsing food-fish populations as the most serious human activity) (The National Academy of Sciences; overfishing; ) (the most serious human activity; threatens; the ocean)
The National Academy of Sciences The National Academy of Sciences the most serious human activity
has ranked overfishing threatens
overfishing and collapsing food-fish populations as the most serious human activity
the ocean