I believe the answer is: scarcity and opportunity costs
A concert tend to happen on unpredicatble time, which make it considered to be scarce among fans. When we are forced to choose between going to concert or study, we would be forced to weigh the opportunity cost that arise when we sacrifice a certain option to pursue another, and choose the activity that give us the most benefit.
It was originally made in Portugal
The Bald Eagle is our National bird.
I believe the answer is: <span>Binocular Disparity
</span><span>Binocular Disparity happens when the right and left eyes perceive a same object differently from one another, which create a horizontal defect in the victim's vision. This condition is most commonly caused by retinal damage during injuries/accidents.
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Explanation:
springdale Road America during the Louisiana