50 points
define lung volume and air pressure. then describe how changes in lung volume and air pressure within the lungs allow inspiration and expiration to occur.

do it on your own words don't copy and paste from another cite

The statement defines the use of ethics.

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants

When is it most common for humans begin to develop a sense of self worth? a. adolescence b. early childhood c. infancy d. late childhood