Returning to yellow light, what happens to the spacing of the nodal lines if you move the light sources farther apart (say, moving the "Spacing" to the mid point of the slider). What can you say about the dependence of the angular separation of the nodal lines on the spacing of the sources? A. The angular spacing of the nodal lines is inversely proportional to the spacing of the light sources.
B. The angular spacing of the nodal lines is proportional to the spacing of the light sources.
C. The angular spacing of the nodal lines is independent of the spacing of the light sources.

Global warming was a major concern some people do not care global warming is fake it is not real the percentage of it happening  is slight 

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero. 

The anwser is: wave a has a greater pitch and frequency.

Well it depends on the object or substance