While researching a topic, a student has taken the following notes:
- A nonnative species that causes environmental or economic harm when introduced to an ecosystem is considered invasive.
- Multiflora rose is an invasive species of shrub that forms dense thickets and invades pastures.
- It was first introduced to the US for its use in living fences.
- Garlic mustard is an invasive species of flowering plant that crowds out native plants.
- It was first introduced to the US for food and medicinal uses.