Answer:
Nodes of Ranvier are gaps in the myelin sheath coating on the neural axon. The myelin allows the electrical impulse to move quickly down the axon. The nodes of Ranvier allow for ions to diffuse in and out of the neuron, propagating the electrical signal down the axon.
Answer:
mitochodrion.
Explanation:
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The leves need to beed in clay so there comes no air close to the leaves this important because otherwise bacteria could dissolve the leave