A variety of indicators change color at various pH levels. A properly selected acid-base indicator can be used to visually indicate the approximate pH of a sample. An indicator is usually some weak organic acid or base dye that changes colors at definite pH values.
In United States politics, a government shutdown occurs when Congress and the President fail to pass appropriations legislation funding government operations and agencies. In this case, the current interpretation of the Antideficiency Act requires that the federal government begin a shutdown of the affected activities involving the furlough of non-essential personnel and curtailment of agency activities and services. Since 1976, when the current budget and appropriations process was enacted, t
Why would much of the U.S. federal government shutdown and what happens when it does? The Cause of Government Shutdowns. The U.S. Constitution requires that all expenditures of federal funds be authorized by Congress with the approval of the President of the United States. The U.S. federal government and the federal budget process operate on a fiscal year cycle running from October 1 to midnight September 30.