Sariah enters a room with several chirping crickets in it. upon first entering the room, sariah can hear the chirping; however, as she begins to talk to her friends, she is no longer aware of the chirping even though it is still there. the fact that sariah no longer perceives the chirping sound demonstrates sensory question 15 options:

sensory adaptation.

Sensory adaptation it's when the sensitivity to a stimulus decreases as a consequence of constant exposure to the stimulus.
When the stimulus starts, the neurons will begin firing action potentials. After a while in the same environment, you'll most likely have forgotten all about that sensation (in this case noise) even though the stimulus is exactly the same.

It should be at the center of any map going vertically: the prime meridian, as it passes through greenwich,  england, is considered 0 degrees longitude