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

[Q]: The mass remains the same does burning matter affect its mass.
[A]: How does burning matter affect its mass?


[Q]: Phospholipids are the main component of the cell membrane.
[A]: What is the main makeup of the cell membrane?


[Q]: A defining feature of deformed sedimentary rocks is that they are not horizontal.
[A]:
What is a defining feature of deformed sedimentary rocks?