instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
A crater can usually be found on the top of composite volcanoes.
answer:
A crater can usually be found on the top of what kind of volcanoes?


question:
Single-celled organisms and multicellular organisms have this in common: both have a way to get rid of waste materials.
answer:
Which characteristic do single-celled organisms and multicellular organisms have in common?


question:
When the energy of the earthquake reaches shore, it forms a huge wave called a tsunami.
answer:

When the energy of the earthquake reaches shore, it forms a huge wave called?