Taking a test right now. correct answers only. the place theory of hearing is better than frequency theory at explaining pitch perception for sounds.
a.
low frequency
b.
low and high frequency
c.
mid-range
d.
high frequency
select the best answer from the choices provided
a
b
c
d

What does homeostasis means in biology?

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.