Bear was proud of his bushy tail and boasted that it was prettier than Fox’s tail. What does the word boasted mean as it is used in the sentence?

Which statements are true for invasive species? 1. they always stabilize an ecosystem. 2. they’re always successful in adjusting to a new habitat. 3. they often compete with the native species for resources. 4. they have the ability to displace the native species. 5. they’re always pests.