Answer: A *For question 1* sry only one I looked at...also noticed the other person had 2 answers so I narrowed this one down
Explanation:
B is not right because it only focuses on the mind game they were talking about(only mentioned once)
C is not right because it has not been proved that you <em>can't </em>travel through the center of the Earth
(I'm assuming you got D wrong but just in case) I think it's safe to say that answer choice D is only a sum up of paragraph 2. *Basically it doesn't sum up the whole passage*
An axon is a long projection of the nerve cell which conduct electrical impulse away from the neuron. The function of the axon is to transmit information to different neurons. Myelin is always found wrapped around the axon of neurons to create myelin sheath. The myelin sheath helps the axon by increasing the speed at which impulse propagation takes place
The sentence "Moreover, it is probably just as valuable or more valuable to us now, than it was in the ancient past".