What might be a reason a soldier with an amputated arm might experience phantom limb pain?
a) the experience is purely psychological.
b) sensory neurons previously associated with the limb fire action potentials associated with pain.
c) sensory neurons previously associated with the limb are damaged.
d) the body develops proprioceptors to compensate for the missing limb.

Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

What best describes emerging scientific ideas