Write a balanced half-reaction for the reduction of aqueous nitrous acid to gaseous nitric oxide in basic aqueous solution. Be sure to add physical state symbols where appropriate.

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.