Answer:

contains the DNA of the hair
There isn’t exactly a name for it other than “folded sarcolemma”, however, the end of the motor neuron does extend some projections into these spaces.
What are your options because i have a lot that apply
Precipitation removes particulates from the air
Particles in solids move ever so slightly. They are not completely at rest, but since they are so packed together it’s difficult for them to move. That’s what makes a solid a solid. Particles in liquids slide and move past each other fairly quickly, and have space to move. Particles in gases are the most spread apart, and because of this, they move the quickest. Hope this helped.