Study of petalogy ? study of phytology

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

What class of levers is shown in this image?