Answer:
If it weren't for these, no one would be aware of Idaho's existence.
A time when they're green. A time when they're brown. But both of these times, cause me to frown. But just in between, for a very short while. They're perfect and yellow. And cause me to smile.
What is round, has a twin, and sees more than most?
I'm very tempting, so it's said, I have a shiny coat of red, and my flesh is white beneath. I smell so sweet, taste good to eat, and help to guard your teeth.
You throw away the outside, eat the inside, and throw away the inside. What is it?
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around