true 

false

Abrasion

Cut

Indentation

Patent

it will destroy the toolmark evidence that is there

it will leave new evidence behind covering up the original

contamination of the evidence

all of these

3-D imprints left in a soft substance such as mud or snow

2-D impressions that are visible to the unaided eye

Impressions hidden to the eye but can be made visible using development techniques

Impressions that are easily lost and must be documented right away with casting

Gel lifting

Lift Latent Impressions

Cast it if it is plastic with dental stone or plaster

Photograph it and use a ruler for scale