C. Aerial photography
Satellites and helicopters take pictures of places so they can go into online maps for people to see.
Dryfoos and Barkin highlight four main problems that affect adolescents and put youth at risk. These are:
Delinquency- increased segregation of African-American and Hispanic children in alienated neighborhoods leads to criminal tendencies.
Substance abuse- minimal involvement into the lives of teenagers causes teenagers to choose wrong paths.
Teen pregnancy- lack of care and support from parental figures are reasons behind teenage pregnancy in America.
School failure- they point out that school system fails to cater to the needs of the students resulting in significant number of dropouts every year.
In reference to these, Dryfoos and Barkin chart out prevention programs and various other strategies to help youth at risk.
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Answer:
Known today as Tell el-Muqayyar, the "Mound of Pitch," the site was occupied from around 5000 B.C.E. to 300 B.C.E. Although Ur is famous as the home of the Old Testament patriarch Abraham (Genesis 11:29-32), there is no actual proof that Tell el-Muqayyar was identical with "Ur of the Chaldees." In antiquity the city was known as Urim.
Explanation:
To separate two objects in a mixture, we take advantage of the difference in their properties. For this case, we use their magnetic properties. We can use a magnet to separate the steel pins and the beads since steel pins are attracted to a magnet while the plastic beads are not.