It's so noisy! "how can you stand it? " remarks caitlyn as highway traffic screams past her friend dave's ground-floor apartment. "i don't even notice it anymore," dave replies. this exchange best exemplifies the psychophysical concept of:

The correct answer is adaptation.

In terms of psycho-physiology, adaptation refers to the phenomenon wherein our sensory system shows decreased responsiveness to sensations or sensory stimuli after prolonged exposure to them. In this instance, when Dave says that he doesn't notice the sound of traffic outside his apartment anymore, it is because after prolonged exposure to the traffic noise, his auditory system (hearing) has adapted to it. 

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !