Answer: sneezing or coughing over the evidence, direct sunlight on transport an storage
Explanation:
DNA evidence is contaminated when DNA from an outside source (exogenous DNA) gets mixed with DNA relevant to the case. It can happen in a variety of ways, from someone sneezing or coughing over the evidence,
Something that doesn’t depend on something else
Answer:
Yeah, none of my teachers actually teach that’s why I use this.
Its the first layer of protection in the atmosphere against radiation from the sun and its harmful U.V. rays.