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?

  Options: 
 A. Non-native plants are able to mutate rapidly.
 B. Non-native plants cause native animals to relocate.
 C. Non-native plants are able to be used for medicine.
 D. Non-native plants compete with native plants for resources.
Answer: D