During quiet breathing:
only the internal intercostal muscles contract.
inspiration involves muscular contractions and expiration is passive.
inspiration is passive and expiration involves muscular contractions.
both inspiration and expiration are passive.
both inspiration and expiration involve muscular contractions

What characteristic make legumes a good food source for food insecure populations

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit

2polnis which of the following is an advantage of an in vitro experiment?me