Not all introduced species are invasive, nor all invasive species deliberately introduced. In cases such as the zebra mussel, invasion of US waterways was unintentional. In other cases, such as mongooses in Hawaii, the introduction is deliberate but ineffective (nocturnal rats were not vulnerable to the diurnal mongoose). In other cases, such as oil palms in Indonesia and Malaysia, the introduction produces substantial economic benefits, but the benefits are accompanied by costly unintended consequences. COUNT 4
QSN1 What animal unintentionally invaded the US waterways? ANS1 the zebra mussel QSN2 What animal intentionally invaded Hawaii? ANS2 mongooses QSN3 What animals were not vulnerable to the mongoose? ANS3 nocturnal rats QSN4 What countries experienced unintended consequences from species invasion? ANS4 Indonesia and Malaysia,