Answer:
D
Explanation:
Facilitated diffusion is a form of passive transport hence no energy is required by the cell. This means that while the molecules are moving down a concentration gradient – line normal diffusion – the movement of the molecules needs to be facilitated (in this case by a transmembrane protein) either because the molecule is polar and can't pass through the hydrophobic region of the cell membrane, or the molecule is too big to passively pass through the small natural pores of the cell membrane.
Some of the main functions of skin cells are to provide protection, perceive and transmit sensation, control evaporation and regulate temperature.<span> Skin cells, which are epithelial cells, are also self-repairing and reproduce quickly.</span>
Answer is: C
Hopefully this helps you, have a nice day! :)
in addition to that; (it's pairs of 4 types of (c))
B because it’s talking about the tree itself. Saying that it’s plants would divert it to a different plant. The cells of the wood is what makes the tree and is relevant to the question
Working down mate, my best answer would be carbon monoxide, but I'm not studying exactly what you are. All those answers are logical except ozone.
