Flatworms absorb oxygen by diffusion mechanism through their
skin to the cells in their bodies. Since flatworms do not have a circulatory system,
their bodies' cells are positioned close to the skin to ease the uptake of
oxygen from surrounding fluids or water.
Answer:
Intestines
Explanation:because if you don't have them then you will not survive because you need them to go number one and number two if youndont then you will blow up your belly.
<span>B, it recognizes substances and other cells it comes in contact with.</span>
{{-Hello Pumpkin-}}
----------------------------------------
I think it is the following;
Reproduction
Multicellular or Unicellular
Autotroph or Heterotroph
------------------------------------------
I am so sorry if this is not correct.
What? im aorry i dont understanf