Which of the following is/are likely reasons that the introduction of a species to a new area would cause a decrease in the native population?
1. There is increased competition for limited resources.
2 The new species and native species form a symbiotic relationship.
3 The new species is poorly adapted to the new area.
The answer should be choice 1. The native species would have to fight against the newly introduced species for limited resources. New species would require more resources.