Plains leopard frogs are one of the most common frogs in southern Iowa, however, these frogs are declining due to habitat destruction, additions of roadways, pollution, and other factors.
(leopard frogs; are; one of the most common frogs in southern Iowa) (these frogs; are declining; due to habitat destruction, additions of roadways, pollution, and other factors)
leopard frogs these frogs
are are declining
one of the most common frogs in southern Iowa
due to habitat destruction, additions of roadways, pollution, and other factors