What am I?

I am always hungry and will die if not fed, but whatever I touch will soon turn red. What am I?

I get answered even though I never ask a question. What am I?

I run yet I have no legs, what am I ?

I go around all the places, cities, towns, and villages, but never come inside. What am I?

I speak without a mouth and hear without ears. I have no body but come alive with wind. What am I?

You go at red, but stop at green. What am I?

I help you from your head to your toe. The more I work, the smaller I grow. What am I?

I’m (usually) white and used for cutting and grinding. When I’m damaged, humans usually remove me or fill me. For most animals I am a useful tool. What am I?

I’m where yesterday follows today and tomorrow is in the middle. What am I?

I have branches, but no fruit, trunk or leaves. What am I?

A seed with three letters in my name. Take away two and I still sound the same. What am I?

I have two hands, but I can not scratch myself. What am I?

I am the beginning of everything, the end of everywhere. I’m the beginning of eternity, the end of time and space. What am I?

I can wave my hands at you, but I never say goodbye. You are always cool when with me, even more so when I am high! What am I?

Always in you, Sometimes on you; If I surround you, I can kill you. What am I?