Answer:
With three eyes and as black as night I frequently knock down ten men with a single strike!
I am a seven letter word. I am very heavy. Take away two letters from me and you will get eight. Take away one letter from me and you will get 80. What word am I?
I am lighter than air, but a hundred people cannot lift me. Careful, I am fragile. What am I?
I go in hard, come out soft. Blow me hard and I'll make a pop. What am I?
I am a caribbean shape that makes ships disappear
No matter how little or how much you use me, you change me every month.