Answer:
Species interaction- competition, predation, parasitism, mutualism, and commensalism.
Movement because plants don't move and animals aren't miving constantly
I believe it is a Pure Substance
If DNA is found at a crime scene it can help locate people that were at the crime scene. If the criminal has committed crimes before their DNA will already be in the police system. If not they can take samples from suspects and pinpoint who committed the crime.
A molecule.
Have a nice day, hope this helps.
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