Not going to lie. I looked your question up, and all I found was ways to make crack. Not good for the school to see in my search history. Lol Good luck finding your answer.
Although eating can’t remove the cause of stress, carbohydrates (carbs) allow the brain to make serotonin. Serotonin makes us calm, and relieves stress.
1) Frost has formed because the humidit changed as the temperature decreased. Thus turning into dew.
2) The temperature decreased as the time went by. the relative humidity has also decreased. They are relative to each other.