What are the "following" I need to know the possible answers.
A flatworm does not have a body cavity.
<span>The myelin sheath allows nerve impulses to propagate very quickly along a nerve's axon to transport the signal between nerve cells. The myelin coating allows the chain reaction of impulses to jump certain distances instead of waiting for the chemical changes to happen at all points on the axon.</span>
It’s True not False true is the answer
