Answer:

Explanation:
In a chemical reaction, the <u>produc</u>ts are <u>produc</u>ed. The <em>react</em>ants are the substances that <em>react.</em>
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In a chemical reaction equation (with the arrow pointing right) the reactants are on the left and the products on the right.
The reactants enter and the products come out.
So, the statement given - products enter a reaction and reactants come out - is false and it is actually the other way around.
Answer: The nodes of Ranvier
Explanation: The speed of impulse conduction along an axon are increased by this.
Answer: False
Explanation: This is FALSE because the bats make a high frequency sound and we can't hear that type of sound.