Vocabulary grows slowly between two and three years of agetrue or false 

I believe the answer is true

The answer is false because that is a time of quick growth.

It depends on what type of third separates the three notes.for example: if you have two mayor thirds is an "aumented chord"if you have two minor thirds is an "diminued chord"if you have one mayor first and then one minor is a "mayor chord"and inverted is a "minor chord"