New research shows that many US marine mammal populations — especially some seals and sea lions–have rebounded since 1972, because of the Marine Mammal Protection Act.
Fuente : http://www.eurekalert.org/pub_releases/2013-04/uov…
New research shows that many US marine mammal populations — especially some seals and sea lions–have rebounded since 1972, because of the Marine Mammal Protection Act.
Fuente : http://www.eurekalert.org/pub_releases/2013-04/uov…