What are the wavelike muscle contractions that move food along the digestive tract?

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

Which mechanism of transport takes place when solute particles move from a region of high concentration to a region of low concentration? active diffusion isotonic osmosis

Hairs that clean dirt out of the air in your nasal passages are called: a. sinus b. trachea c. cilia d. mucus