How many full length strands of hair are collected from the scalp to use as a sample?

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

c) up is the direction the magnetic force is acting on the charge.

you can cut your hand off if your not