The genes of the wild populations, which have been passed on for centuries, adapt wild salmon to surviving in their freshwater environment and to the complicated and challenging migration to the ocean and back to their birthplace.
(the wild populations; have been passed on; T:for centuries) (The genes of the wild populations; adapt; wild salmon; to surviving in their freshwater environment and to the complicated and challenging migration to the ocean and back to their birthplace)
the wild populations The genes of the wild populations
have been passed on adapt
T:for centuries
wild salmon to surviving in their freshwater environment and to the complicated and challenging migration to the ocean and back to their birthplace