They breathe through their skin. Air dissolves on the mucus of their skin, so they MUST stay moist to breathe.
If worms dry out, they suffocate. As fresh air is taken in through the skin, oxygen is drawn into the worm's circulatory system, and the worm's hearts pump the oxygenated blood to the head area.
<span>there is more than one path for the electrons to take.</span>
Answer:
I would probably say (a) kinetochore microtubules
Answer: Initially part of the flower will be blue and part will be red, but eventually both colors will appear in all parts of the flower.
Explanation: