(For example, many populations of white tailed deer in the East are exploding because natural predators such as mountain lions have been eliminated and 
(many populations of white tailed deer in the East; are exploding; because natural predators such as mountain lions have been eliminated) (natural predators such as mountain lions; have been eliminated; )
many populations of white tailed deer in the East natural predators such as mountain lions
are exploding have been eliminated
because natural predators such as mountain lions have been eliminated