Rachel and Joey are both three months old. They are looking intently at each other, while they are both moving their arms and legs excitedly. Rachel and Joey are engaged in

Intersex

What will be an ideal response?

You are sitting in a class when Mr. Walberger holds up a sheet of blank white paper. We could guess that most people would not respond in any important way to the paper, because the paper is a ______ stimulus

Fill in the blank(s) with the appropriate word(s).