Crime scene investigator Calvin Miller finds a firearm left at a scene. He takes an evidence collection box, picks up the gun by sticking his pen in the barrel, deposited it into the box, and seals it for delivery to the lab. He then sees three bullets lodged into the wall. He takes a set of tweezers and pulls out each bullet, until it is free from the wall, and then places them together in a small paper bag to be sent to the lab. What, if anything, did he do wrong in the collection process?

24-karat gold is considered to be pure gold. 18-karat gold is considered to be about 75% gold. what is 18-karat gold considered a mixture rather than a pure substance? a) it has a variable composition of other elements and minerals. b) its color is different than pure gold. c) the gold atoms are not arranged in a repeating pattern. d) it can be melted and transformed into a different substance.

The cause and events that led to civil rights

Which of these is the best example of a cause-and-effect chain of events? 1. alonzo went to the music festival. 2. carmen went to the same music festival. 3. alonzo met carmen at the music festival. 1. yosef bought a new car from a dealership. 2. bailey bought a car from the same dealership. 3. bailey paid more for his car than yosef did. 1. the high school football team played a game on friday night. 2. the drama club put on a play on friday night. 3. maya watched the football game instead of the play. 1. a fast food restaurant ran an advertisement on television. 2. hank saw the advertisement and got hungry. 3. hank went to the fast food restaurant and bought food.