A climber reaches the peak of a
3000-meter summit. At this altitude,
there is less oxygen for the climber
to take in with each breath. Which of
these best describes how the
climber's body maintains
homeostasis in this environment?
F The throat expands to allow air
to flow more quickly to the
lungs.
G Airways in the lungs contract to
prevent air from leaving the
body.
be
H The diaphragm contracts more
rapidly to increase the breathing
rate.
J
Heart rate decreases to allow
blood to pass more slowly
through the lungs.
mont
2 rol