I think your answer should be B. an organism. Hope this helps. =^-^=
Give it a carrot and pet it for a bit,
Should be happy and well
And cute
The japs do eat alot of squid
Answer:
They selectively allow certain particles into and out of the cell
Explanation:
Proteins in the cell membrane allow some particles to enter and exit the cell. This type of passive transport is called facilitated diffusion.
Surface tension of water is 72 dynes/cm<span> at 25°C . It would take a force of 72 dynes to break a surface film of water 1 cm long.
Hope this helps.</span>