which ion must enter the axon terminal of a motor neuron in order for the neuron to release the contents of its synaptic vesicles through exocytosis?

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph