A. Neurotransmitters diffuse across the membrane of neurons
Explanation:
When we begin to move, the brain initially sends a signal to the spinal cord, then the nerve cells in the spinal cord monitor the exact coordination of the muscles. Signal from the brain and the spinal cord directs the movement of leg muscles. Signal is transmitted by release of neurotransmitter from the neuron to the synaptic cleft and its binding to the receptor of adjacent neuron.
Answer: 1) The travels of Marco Polo
2) Columbus reaches the Western Hemisphere
3) Captain Cook maps Newfoundland
4)First photos of the Earth from space
Explanation:
Marco Polo was in the 13th century
Christopher was in the 15th century
Captain Cook was in the 18th Century
And the Photos from earth were from the 20th Century
Answer: past
Explanation: answers show that combonations can develope things
Yeah what is the question here...? I’d like to help!
B is the answer and I hopes this helps