Answer: sedimentary rock made of the shells of sea creatures
Explanation:
The examination of the sedimentary rocks on the Grand Canyon in the Grand Canyon National Park reveals that the age of this canyon is about 200 million old. These were found deposited in the warm and shallow seas. These were found in the western North America. The examination of the sedimentary rocks revealed that these were composed of the calcium shells of the sea animals.
Answer:A. Heat energy moves in waves through the air.
Explanation:Hope it helps
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The passage of the fifteenth amendment led to the establishment of long-awaited true political equality.
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- The Fifteenth Amendment that was done to the United States Constitution guaranteed the African Americans the right to vote in the elections conducted thenceforth.
- Before the passing of the Fifteenth Amendment, the blacks of the African Americans were deemed to be politically untouchable.
- The Fifteenth Amendment allowed blacks to choose their own representatives as it clarified that no one would be denied the right to vote based on race, color, or previous condition of servitude.
Retreatist gangs are unable to gain success through legitimate means and unwilling to do so through illegal ones.
Explanation:
Retreatist gangs are also known as criminal gangs and they can be seen in stable neighborhood. They develop in those areas which are unable to give illegitimate or legitimate opportunities. Illegitimate opportunity is a theory that says individual perform crime at that time when there are less chances that the person will be caught . This theory was defined by Richard Cloward and Lloyd Ohlin in the year 1960.
Retreatist gang mainly stress on the consumption of harmful material that is drug which is termed as addiction.
The map shows the highest densities of populations around the world, specifically south asia(the small red area).