Donita is a firearms investigator. She collects evidence on a suspect’s skin and clothing for gunshot residue. Which of the following tests are best used for skin and which is best for clothing? Donita uses to collect evidence from the suspect’s skin for gunshot residue. She uses to collect evidence from the suspect’s clothing.

An observation that requires measurement is called quantitative observable or qualitative

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled