Answer: G
Explanation: A galaxy is indeed a collection of stars, gas, and dust held together by gravity.
Answer:
cell body, nodes of Ranvier, dendrites, axon, and myelin sheath are your answers.
Hope this helps!
I believe it is
C
........
The situation is an example of negative reinforcement.
In the condition of negative reinforcement, a stimulus especially an unpleasant stimulus is removed due to a particular behavior of the person. In this case, the unpleasant behavior is the headache, and taking aspirin is a behavior of Nancy, which cut of the stimuli, that is pain relieving. In negative reinforcement a particular behavior is increased, in order to remove the unpleasant stimulus.
