Answer:
Cooking sugar on a stove
Explanation:
All the other actions create physical changes and can always be reversed. Hope this helps :)
Answer:
This really just depends on how good you understand ancient Egypt, but if you can give examples of your knowledge of ancient Egypt but if you having trouble thinking of the word that describes it just ask your self if your good or don't have much trouble doing or understanding it.
The swamp is about 10,000 yeats old, its oldest inhabitants were native americans.