A split-field photo of cartridge casings through the lens of firearm examiner Michael Haag’s comparison microscope. Haag said he determined the casing on the left, recovered as evidence of a crime, ...
Bacteria are unicellular prokaryotic microorganisms. There are 3 common shapes of bacteria: the coccus, bacillus, and spiral. Bacteria divide by binary fission, a process by which 1 bacterium splits ...
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