A speech about nature? That's pretty broad. If you are truly in college, you'll need to narrow your focus and then search more intelligently.
If you need help learning how to search, including how to choose good search terms, go here and scroll down to the links under HOW TO SEARCH THE INTERNET:
college - CAN YOU GIVE ME A BEST ORATORICAL PIECE ABOUT NURTURING THE YOUTHS??
oratorical piece - can somebody give me a good oratorical piece???...thanks a ...
high school - CAN U GIVE ME A GOOD ORATORICAL PIECE
english - please give me an oratorical piece about statistics..
high school - can u give me an oratorical piece about philippine corruption?
English - In Invisible Man, the main character disproved of Tod Clifton and didn...
Statistics - I'm going over some practice problems and I can't seem to figure ...
english - need some oratorical piece please
math - how to make an oratorical piece about mathematics
Math - 23 college sophomores at Crocodile Community College, 12 preferred ...