<span>The 0-19 demographic is the cohort that is the majority of the population in the US over the years. This seems to be counter-intuitive, since it is usually thought that there are typically more adults than kids, but it shows that adults are more dispersed in their ages than youth are in the country.</span>
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for answering other peoples questions in the top left corner there should be a drop down where you can change the grade preference and the subject!
and when you ask a question they should let you choose the subject before you ask.
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B. Basic systems needed to support a society, such as roads and a water supply
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no result but for you {best of luck ☆
