What is the function of a mollusk's radula a) it is used for movement b) it is used for feeding c) it is used for defense d) it is used for repriduction

In which situations is the principle of cross-cutting relationship useful in determining relative age?

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the: