"I am tiny but I can carry fifty times my own body weight. I have lived on Earth for over 100 million years. There are more of me on Earth than of any other insect. What am I?"

Answer: An Ant. Ants can carry up to 50 times their own body weight. They have existed since the Cretaceous period, over 100 million years ago. There are estimated to be 20 quadrillion ants alive on Earth at any one time — more than any other insect species.