Answer:
What has a thumb and four fingers but is not alive?
My first two letters say my name. My last letter asks a question. What I embrace I destroy.
I am long and slim works in light. Has but one eye and an awful bite.
The higher I climb, the hotter I engage. I cannot escape my crystal cage. What am I?
I have a foot but no leg. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.