Answer:
I am interested in your case
Sentence 1 is in passive voice
It is one of at least five forms of locomotion used by snakes, the others being lateral undulation, sidewinding, concertina movement, and slide-pushing. Unlike all other modes of snake locomotion, which include the snake bending its body, the snake flexes its body only when turning in rectilinear locomotion.
Because of the current commas, it would be considered pacing
