What is the function of the nose? To warm the air
To humidify the air
To filter the air
*All of the above

List five ways we are indebted to phytoplankton

Which of the following does not make up ground substance of connective tissue? hyaluronic acid elastic fibers glycosaminoglycan proteoglycan

Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?