Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Newts drop their tails when threatened of the following is an example of an escape strategy that is used to avoid being killed and eaten by predators.
Which of the following is an example of an escape strategy that is used to avoid being killed and eaten by predators?

Transparent matter transmits light without scattering it.
What type of matter transmits light without scattering it?

Prokaryotes group of simple organisms recycles nutrients and has been on earth since long before multicellular life appeared.
What group of simple organisms recycles nutrients and has been on earth since long before multicellular life appeared?