What are the three structural changes that must occur in young, unmodified plant cells as they specialize into xylem tissue

Examine the air pressure map. which type of line is shown on the map?

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.

Which structure in the cardiovascular system connect arteries to veins?