Non-native plants are able to mutate rapidly. Non-native plants cause native animals to relocate. Non-native plants are able to be used for medicine. Non-native plants compete with native plants for resources.
I gave my students this multiple choice question: When taken to a new habitat, non-native plants often threaten native plants of the new habitat. Why do non-native plants threaten native plants?

Only one answer is correct among these 4 choices:
- Non-native plants are able to mutate rapidly.
- Non-native plants cause native animals to relocate.
- Non-native plants are able to be used for medicine.
- Non-native plants compete with native plants for resources.

Could you tell me which one is correct?

Non-native plants compete with native plants for resources.