Why is red onions purple

Which popular american sandwich is made by placing a beef patty inside a bun?is an american classic prepared by placing a fried or barbequed beef patty in a bun.

What is the best way to use the clean water act to address the issue of dirty water and diseases that plague asmall community? a) to report the number of cases of people who havecholera symptomsb) to provide health guidelines about effects from waterborne diseases c) to enforce standards that focus on chemical dischargeinto bodies of waterd) to carry out research that investigates how dirty wateraffects human health

What factors are contributing to the increase in obesity among children?