The answer would be A: its container.
Gas will expand to fill whatever container it is put in.
Answer:
The bladder wall is made of many layers, including: Urothelium or transitional epithelium. This is the layer of cells that lines the inside of the kidneys, ureters, bladder, and urethra. Cells in this layer are called urothelial cells or transitional cells
Explanation:
C cause ur changing the identity of the material