Answer:
Tempera is traditionally created by hand-grinding dry powdered pigments into a binding agent or medium, such as egg yolk, milk (in the form of casein) and a variety of plant gums.
Explanation:
Not more than 4 in a measure, hope this helps !!
So you can find which type of photography you like best
I believe the answer is Rubato, when composers slightly slow down or speed up the tempo of the music