Answer:
true, tephra is rock fragments and particles ejected from a volcano
Either: Brand Name, Product Placement, Packaging, Pricing or Reputation.
Hope this helps a little!
Answer:
A strong background in chemistry and instrumental analysis and a good grounding in criminalistics are vital. An undergraduate degree in forensic science or natural science is required for work in crime laboratories, with extensive coursework in mathematics, chemistry, and biology. More advanced positions, such as lab managers and supervisors, might require a master’s degree. A Ph.D. is often preferred for advancement to positions such as lab director, but it is required for forensic research positions at academic institutions. Arsonists, for example, often use accelerants such as gasoline or kerosene to speed combustion and spread flames in the interior of a building. A forensic chemist may collect samples of burned and unburned materials, extract the volatile hydrocarbons, and separate the components for analysis by gas chromatography.
B should get you the answer you are looking for
