Answer:
The swim bladder is located in the body cavity and is derived from an outpocketing of the digestive tube. It contains gas (usually oxygen) and functions as a hydrostatic, or ballast, organ, enabling the fish to maintain its depth without floating upward or sinking.
Explanation:
Answer:
This is a plasmatic membrane (cell membrane) that bounds a cell.
I'm pretty sure it's high density as a solid.
