Built To Last. The dam itself was built to last. It was built to be as tough as the canyon walls which surround it. A total of 3,250,000 cubic yards of concrete was poured to create the dam â itâs enough to build a monument 100 feet square and 2 1/2 miles high.uilt To Last. The dam itself was built to last. It was built to be as tough as the canyon walls which surround it. A total of 3,250,000 cubic yards of concrete was poured to create the dam â itâs enough to build a monument 100 feet square and 2 1/2 miles high.
Report Abuse. The main function of the eyebrow is to prevent moisture, mostly salty sweat and rain, from flowing into the eye, an organ critical to sight.
Brows are voice-controlled â¦ kind of. Brows help us signal emotions, but theyâre also on autopilot: As the pitch of your voice rises, so do your eyebrows and vice versa. Not only that but when you make an expression without thinking, like when youâre surprised, eyebrows move in a way thatâs symmetrical to each other. Conversely, when you make whatâs called an âintendedâ expression, like suspicion and curiosity, your brows will furrow asymmetrically. 6. They give humans a special edge.