What does the schematic diagram tell us about the esophagus ?

Observe and read the flow chart and answer the follwing. What does the schematic digaram tell us about the oesphagus ?

What does this diagram represent?

What does a line spectrum tell us about the structure of an atom?

What does the case tells us about a water resource and its effect on farmers ?

What makes the movement of the food bolus in the esophagus easy ?

What represents this ray diagram ?

What does the picture tell us?

What does the picture tell us?

Explain the process of secondary growth in stems of woody angiosperm with help of schematic diagrams. What is the significance?