Which of these is the correct order through which oxygen enters the body?

a. lungs, bronchi, bronchioles, alveoli, blood

b. bronchi, lungs, bronchioles, alveoli, blood

c. lungs, bronchi, bronchioles, blood, alveoli

d. blood, alveoli, lungs, bronchi, bronchioles

Ashort, vertical, solid, or fleshy stem possessed by gladiolus and which is used in reproduction is termed a . termed a .

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.