Answer:
Roasting a marshmallow is a physical change if it is slightly warmed up. If it is roasted to the point that it is crispy and burnt, it is a chemical change bc the browning is oxidation. This is a process where some of the marshmallow's sugar is burnt and carbon dioxide is released into the air.
Explanation:
It wraps the story up and makes it have a positive ending!
Your answer would be "seeing is believing." The scientist was only telling the character about what the time traveling machine could do, but needed to actually show the character that the machine wasn't a fraud by actually sending it through time.
Answer:
Why are u sad sis ?
Sadness is one feelings of our heart .
