If one of the corporations or the government working on the salmon releases the super-salmon into rivers, or if the pond these fish are in is inadvertently flooded out, these salmon with foreign genes would mate with native salmon.
(the government; working; on the salmon) (one of the corporations; releases; the super-salmon; into rivers) (the pond; are; in) (the pond these fish are in; is inadvertently flooded out; ) (these salmon with foreign genes; would mate; with native salmon)
the government one of the corporations the pond the pond these fish are in these salmon with foreign genes
working releases are is inadvertently flooded out would mate
on the salmon
the super-salmon into rivers
in
with native salmon