A suspected firearm will have several standards (test shots) fired into a . These will then be examined under a for analysis. A) water tank, stereoscope

B) puddy chamber, stereoscope

C) water tank, comparison microscope

D) puddy chamber, comparison microscope

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

b. examine and describe cells

i dont know the answe