General Studies · Statement and Assumptions

Statement: 'Recent studies indicate that the introduction of non-native predatory fish in freshwater ecosystems has led to a decline in native amphibian populations, prompting calls for stricter biosecurity measures.' Assumptions: 1. Non-native predatory fish are a cause for the decline in native amphibian populations. 2. Native amphibians are unable to adapt quickly to new predatory threats. 3. Biosecurity measures, if implemented strictly, can prevent further introduction of harmful species. 4. The decline of amphibians negatively affects the freshwater ecosystem balance. 5. Human activities are the primary cause of non-native species introduction. Which of the following assumptions are implicit in the statement?