Write: Write an explanation for how scientists infer the age of Earth based on index fossils and rock layers. 3-4 sentences at least please you can do more if u like

no sign of dia of fuel cell

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.