Which of the following evidence is considered to be direct evidence? O A fiber from a suspect's couch found on the victim's shirt
Blood from a victim found under the fingernails of a suspect
а
O A fingerprint left on a door knob
O A confession in a police report

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Explanation:

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

a- all cells come from pre-existing cells