Examlex
In the United States, __________ of boys and __________ of girls are involved in organized sports at least once between the ages of 5 and 18.
Positive Feedback
A process in which an initial change leads to further changes that reinforce the initial one, often leading to amplification of the effect.
Dams
Structures built across rivers or streams to restrict the flow of water, typically for the purposes of water storage, flood management, or electricity generation through hydropower.
Inexpensive
Items or services that are low in cost, making them accessible to a wide range of consumers.
Desalination
The process of removing salt and other minerals from seawater to produce fresh water suitable for human consumption or irrigation.
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