Bun and cheese are very yummy. is this gramaticaly correct?

Susie ran a race. she ran 55 miles an hour, and the race took her tt hours to complete.

Feedback is given with little or no reservation 1.supportive 2.high-monitoring 3.positive 4.low-monitoring ?

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.