My mother recently found buried in one of her bookshelves a notebook of mine from 7th grade. Looking through it, I found the following question, with no answer written down. For all I know, its very obvious, but I’m not sure what the answer is.
The Pasuk says that Hashem smelled Noach’s korban and was so pleased that he promised never to bring a mabul again. Why did Noach get such a reward for a simple korban? Hevel, Kayin, and Adam also brought korbanos, but they didn’t get such a promise. What was different about Noach’s korban?