Question

what is direct evidence? *
eyewitness accounts or confession
circumstantial evidence
fingerprints
dna

why is it important to separate witnesses at a crime scene? *
to allow them to rest
to prevent collusion
to make them uncomfortable
to record their conversations

Explanation:

Direct evidence is evidence that directly proves a fact without the need for inference. Eyewitness accounts or confessions directly prove an event occurred. Circumstantial evidence (like fingerprints or DNA) requires inference. Separating witnesses prevents them from colluding (co - operating dishonestly) to change their stories.

Answer:

For "What is direct evidence?": Eyewitness accounts or confessions.
For "Why is it important to separate witnesses at a crime scene?": To prevent collusion.