Cartoon villains live to use me as an insult, And many people are afraid of me, But really we are all just little guys, With six legs and a segmented body

There’s just one of me while others have many From afar I can look just as big as a penny Honey and blood, in some lyrics from songs You can find me right there but sometimes I’m just gone

I can hide in shells and even stretch through the sky, I follow a sequence found in nature's design, I carry life's secrets in a double line. What am I?

I wear a coat of permafrost, Where summers are short and the winter's a boss. I am vast, treeless, and bitterly cold, With a layer of ice that is ancient and old. I house grazing herds and the scurrying lemming. What am I?

Highly fascinating! I'm a condition named after a mythical beast. Instead of a lion goat snake, this is when an embryo absorbs it's twin.