Which unit in the past year was the most interesting topic  and why?

The arrow points to?    

A county planner is trying to add a scanned historical map in a GIS.  The map was georeferenced using an affine transformation and 4 control points.  The RMS errors were all quite low.  To the county planner’s dismay some of the map’s roads and landmarks do not all match with the modern map.  Which of the following is the best explanation for this?

Which is one of the  most common acquired pediatric heart conditions among children?

Which is the correct technique for measuring tricuspid regurgitant jet?   

A datum represents __________.

The shortest distance between two points on a sphere is the __________ distance.

Consider the set-up shown below: What technique learned this semester would use this set-up? Explain  

Indicate how you would use litmus paper to verify the acidity or alkalinity (basicity) of a solution. Indicate what color changes you would expect to observe, before and after each test 

Label the structure below.