I run cold and hot, I look blue but am red. What am I?

I run cold and hot, I look blue but am red. What am I?

Answer: blood

#Medium #Short #What am I?

I run cold and hot, I look blue but am red. What am I?
I run cold and hot, I look blue but am red. What am I?
I run cold and hot, I look blue but am red. What am I?

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Next riddle in: "What am I?" Riddles

Found in pizza but also the sky.
You'll know I'm around when I'm close by.
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Next riddle in: Medium Riddles

As I was going through a field of wheat,
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I kept it till it ran alone.

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