Answer:
I am flora, not fauna. I am foliage, not trees. I am shrubbery, not grass. What am I?
The higher I climb, the hotter I engage. I cannot escape my crystal cage. What am I?
I help engines spin and pants stay up. What am I?
I can generate fear and some say I come out of your ears. I am as quiet as a mouse but not welcomed in the house.
Every dawn begins with me. At dusk I'll be the first you see and daybreak couldn't come without. What midday centers all about. Daises grow from me I'm told. And when I come I end all code but in the sun I won't be found. Yet still each day I'll be around.
I am rarely touched but often held. If you are smart you'll use me well. What am I?