When does trace evidence occur? A.
when a perpetrator forgets something at a crime scene
B.
when an eyewitness tells investigators what they saw
C.
when a perpetrator wears shoes that can be traced to the manufacturer
D.
when two objects come into contact with one another

If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

What happens to isotopes that are unstable?