Read the following paragraph:
The ocean is an important source of human food. According to the National Marine Fisheries Service, more than twenty percent of the global population gets the majority of its protein from seafood. But ocean pollution threatens to cripple this vital resource. Nowhere is this clearer than the fishing ports of southern Vietnam, where industrial runoff has filled local waters with toxins. Area fisherman say the few fish they can still catch look and smell too strange for buyers, and they can no longer make a living fishing.
What type of evidence is used to support the claim that “ocean pollution threatens to cripple this vital resource”?
no evidence
anecdotal evidence
expert opinion
facts and statistics