What types of technology are used to patrol the border?

The role of technology in securing the nation’s borders

The U.S. Department of Homeland Security relies on a variety of electro-optical cameras, lasers, chemical detectors, X-rays, and other sensors to limit entry of illegal immigrants, drugs, and other contraband.

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answer is personification

depends on your school

when i was in high school i took ap biology my senior year and it was the hardest one for me because my teacher finished the material within the first month of school and then went on to doing advanced college level it was horrible. but at a nearby school ap biology was one of the easier aps. also, it depends on what you are interested i like math a lot so ap calculus was easier for me than most but i hate history so ap us government was harder for me than most.