Answer:
Because, Air (or any gas) takes up space in water, just like solids. Air (or any gas) is less dense than water, so gas bubbles float to the top of water.
Answer and Explanation:
Due to some technical problems, the complete answer and the explanation are attached in the file named H-W
Provide organs and muscles with the oxygen they need to function
Facilitated diffusion is the transportation that includes a protein!