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

[Q]: Blood is made up of red blood cells, white blood cells, platelets, and plasma.
[A]: Blood is made up of red blood cells, white blood cells, platelets, and what else?


[Q]: A(n) gastropods is noted for having its eyes at the tips of stalks or tentacles that emerge from its head.
[A]: What type of creature is noted for having its eyes at the tips of stalks or tentacles that emerge from its head?


[Q]: Because of the wave character of matter, the idea of well-defined orbits gives way to a model in which there is a cloud of probability.
[A]:
Because of the wave character of matter, the idea of well-defined orbits gives way to a model in which there is a cloud of what?