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

[Q]: The metallic bond is responsible for the properties of metals.
[A]: What is responsible for the properties of metals?


[Q]: On a global scale, plants and other photosynthetic organisms have generated all of the oxygen in the air.
[A]: On a global scale, plants and other photosynthetic organisms have generated all of what element in the air?


[Q]: In budding , organisms reproduce by having new individuals split off from existing ones.
[A]:
In budding , organisms reproduce by having new individuals split off from what?