You are given a sentence and your task is to generate another sentence that supports the given input.

[EX Q]: Solids are in a state of matter that maintains a fixed volume and shape.
[EX A]: A definite shape and a definite volume are properties of the solid, only state(s) of matter.

[EX Q]: A mitochondrion contains two main membranes composed of phosopholipid bilayers and proteins -
[EX A]: Two membranes form the mitochondrion structure of a cell.

[EX Q]: Ocean acidification is a lowered pH of ocean waters caused by increased carbon dioxide emissions into the atmosphere, which results in more CO2 dissolving into the ocean.
[EX A]:
Ocean acidification occurs when excess carbon dioxide in the atmosphere causes the oceans to become acidic.